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T2T's IGF-1 INFO COLLECTION Thread

mrdeeznuts

New member
R3(long) IGF-1

1: Type- IGF-1 Long R3 (Anything else is not as effective, and if the person providing it for you doesn't know anything about it, you are asking for trouble.)
2. Storage- the most popular (and most effective) way to store, transport, preserve IGF is by suspending it in sterile BA in a sterile vial.
This will keep your IGF 99% potent for many months at a time in just about ANY indoor storage, I.E.-closet, drawer, etc. (Take it from me, I stored mine because I wasn't ready to use it for about 6 months in my closet... I had fears about its potency, then I started my first week, and BAM I practically cleaned out the fridge.
3. Use- Usage should not exceed 4-5 weeks, and an OFF period should be about the same. Daily dosages work best (split up into 2 seems to make little difference in the Long R3 version) Most people see results at about 40mcg/day, some use as low as 30mcg/day, and some folks even use 80-100mcg. I SUGGEST to ALL first time users no matter what level, to start at about 40-50mcg/day.
4. Administration- I believe in IM injections over sub q, but either seems to be effective. I like IM better because IM using a slin pin is probably the least painful thing one could imagine, even at two times per day. Also, sub Q shots that contain BA, even diluted BA, can leave little nodules that you may not want to feel on your stomach.
5. Mixing- Most IGF comes suspended in BA. Hopefully it is @ 500mcg/ml or even 333mcg/ml (that would be at 2ml/mg and 3ml/mg respectively) Draw out your desired amount and back load a slin pin. Add enough Bacteriostatic Water to fill the U100 syringe completely.
Some inject immediately before training, while others choose to do 2 shots spread throughout the day... THEY BOTH WORK WELL. Try both; see which method makes your muscles pop out of your skin.
6. Add plenty of protein, and don?t shy away from carbs immediately after training. I used up to 100g of carbs after training, and my body fat went down, all without cardio.


IGF stands for insulin-like growth factor. It is a natural substance that is produced in the human body and is at its highest natural levels during puberty. During puberty IGF is the most responsible for the natural muscle growth that occurs during these few years. There are many different things that IGF does in the human body; I will only mention the points that would be important for physical enhancement. Among the effects the most positive are increased amino acid transport to cells, increased glucose transport, increased protein synthesis, decreased protein degradation, and increased RNA synthesis.

When IGF is active it behaves differently in different types of tissues. In muscle cells proteins and associated cell components are stimulated. Protein synthesis is increased along with amino acid absorption. As a source of energy, IGF mobilizes fat for use as energy in adipose tissue. In lean tissue,

IGF prevents insulin from transporting glucose across cell membranes. As a result the cells have to switch to burning off fat as a source of energy.

IGF also mimic's insulin in the human body. It makes muscles more sensitive to insulin's effects, so if you are a person that currently uses insulin you can lower your dosage by a decent margin to achieve the same effects, and as mentioned IGF will keep the insulin from making you fat.

Perhaps the most interesting and potent effect IGF has on the human body is its ability to cause hyperplasia, which is an actual splitting of cells. Hypertrophy is what occurs during weight training and steroid use, it is simply an increase in the size of muscle cells. See, after puberty you have a set number of muscle cells, and all you are able to do is increase the size of these muscle cells, you don't actually gain more. But, with IGF use you are able to cause this hyperplasia which actually increases the number of muscle cells present in the tissue, and through weight training and steroid usage you are able to mature these new cells, in other words make them grow and become stronger. So in a way IGF can actually change your genetic capabilities in terms of muscle tissue and cell count. IGF proliferates and differentiates the number of types of cells present. At a genetic level it has the potential to alter an individuals capacity to build superior muscle density and size.

There is a lot of talk about the similarity between IGF and growth hormone. The most often asked question is simply which is more effective. GH doesn't directly cause your muscles to grow, it works very indirectly by increasing protein synthesis capabilities, increasing the amount of insulin a person can use effectively, and increasing the amount of anabolic steroids a person can use effectively. GH also indirectly causes muscle growth by stimulating the release of IGF when it (the GH) is destroyed in the human body. So one way you could look at it as GH being a precursor to IGF. So to put it simple IGF is more effective at directly causing muscle growth and density increases. IGF is also much more cost effective.

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IGF can also be effectively used by itself and gains will still be easily noticeable. With growth hormone you need to use high amounts of anabolics and often insulin to see any gains at all, this is not the case with IGF. IGF can be used by itself and is often used by bodybuilders who bridge between cycles, during this bridge is a good time to use IGF since it has no effect on natural testosterone production so it will therefore allow you to return to normal in terms of hormone levels. A stack of IGF, PGF2a, HCG, and clomid would be a good bridge stack and would allow your body to return to normal and still allow you to retain and make new gains.

IGF is a research drug, it hasn't been approved by the FDA for use as a pharmaceutical and it is currently being researched for nerve tissue repair, possible burn victims, and also as a possible aid in muscle wasting for AIDS patients. There are many different analogs of IGF available, instead of mentioning them all, I will simply mention the two most common and the most effective. Regular recombinant IGF is one of the two, it is also the more expensive and the least effective. Regular IGF only has a half-life of about 10-20 minutes in the human body and is quickly destroyed, it can be combined with certain binding proteins to extend the half-life, but it is not a very simple procedure and there is a more effective and less expensive version available. The most effective form of IGF is Long R3 IGF-1, it has been chemically altered and has had amino acid changes which cause it to avoid binding to proteins in the human body and allow it to have a much longer half life, around 20-30 hours. "Long R3 IGF-1 is an 83 amino acid analog of IGF-1 comprising the complete human IGF-1 sequence with the substition of an Arg(R) for the Glu(E) at position three, hence R3, and a 13 amino acid extension peptide at the N terminus. This analog of IGF-1 has been produced with the purpose of increasing the biological activity of the IGF peptide."

"Long R3 IGF-1 is signifacantly more potent than IGF-1. The enhanced potency is due to the decreased binding of Long R3 IGF-1 to all known IGF binding proteins. These binding proteins normally inhibit the biological actions of IGF's."

It is also not as expensive since a media grade version is available which is sufficient for bodybuilding use. There is also a receptor grade available but it is VERY expensive and the only noticeable difference between the two would only be able to be noticed in a laboratory setting. The price on the black market for Long R3 IGF-1 can be seen anywhere from $300-$500 per milligram depending on the source, be wary of black market ******s of any IGF since it is a VERY difficult item to obtain. As mentioned IGF is a research product and is only available from a few laboratories in the world and is only available to research companies and biotechnology institutions. For the rest of this article when I say IGF I am now referring to Long R3 IGF-1 for simplicity sake.

Any form of IGF is ONLY supplied in a lyphosized form, which means a dry powder state. NEVER PUCHASE PRE-DILUTED LIQUID IGF!!!! There is no such product made anywhere in the world and even if there were real IGF ever present in the vial it would all be dead by the time you receive it. IGF is a very delicate peptide and must be diluted by yourself, where you have access to a refrigerator and freezer. There has also been a lot of talk by certain sources claiming to have IGF made by the Eli Lilly company, to clear things up Lilly is a pharmaceutical company and as stated IGF is a research drug and has not yet been approved, Lilly does not and never has manufactured research drugs for retail sale.

The dilutents you will need for the IGF are a weak concentration of hydrochloric acid and a sterile buffer(sterile water or bacteriostatic water) the procedure for diluting the IGF is not very difficult, the dilutents can be obtained from most local chemical suppliers and a good source of IGF would also be able to supply the necessary dilutents.

The most effective length for a cycle of IGF is 50 days on and 20-40 days off. The most controversy surrounding Long R3 IGF-1 is the effective dosage. The most used dosages range between 20mcg/day to 120+mcg/day. IGF is only available by the milligram, one mg will give you a 50 day cycle at 20mcg/day, 2mg will give you a 50 day cycle at 40mcg/day, 3mg will give you a 50 day cycle at 60mcg/day, 4mg will give you a 50 day cycle at 80mcg/day and so on. The dosage issue mainly revolves around how much money you have to spend, plenty of people use the minimum dosage of 20mcg/day and are happy with the results, and in fact several top bodybuilders use the 20mcg/day dosage and are pleased with the results. IGF is most effective when administered subcutaneously and injected once or twice daily at your current dosage. The best time for injections is either in the morning and/or immediately after weight training.

Another frequently asked question of IGF refers to the real world results, in terms of pure weight gain don't expect to gain 5 lbs. a week like you may off of anadrol or a similar steroid. The only weight you will gain from IGF use is pure lean muscle tissue, with steroids most of the weight gained is water weight. With an effective dosage you can expect to gain 1-2 lbs of new lean muscle tissue every 2-3 weeks and these effects can be increased with the use of testosterone, anabolic steroids, and insulin use. Increased vascularity is also very common, people report seeing veins appear where they never have before. And yet another effect reported is the ability to stay lean while bulking with heavy dosages of steroids and TONS of food while on an IGF cycle, this is perhaps the most pleasing effect. Increased pumps are also noticeable almost immediately, the pumps can almost become painful, pumps are even noticeable when doing cardio.

Overall, IGF is a very exciting drug due to its ability to alter ones genetic capabilities. If you can find a trustworthy source and you use it correctly it can be a VERY useful tool in your bodybuilding drug arsenal.

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IGF1, also known as somatomedin C, is polypeptide hormone about the same size as insulin. It is produced predominantly in the liver in response to growth hormone (GH) release from the pituitary gland. Many of the growth promoting effects of GH are due to its ability to release IGF1 from the liver. The conversion ratio of GH to IGF1 varies greatly in different individuals but most external sources of GH convert around 4-6mcg of IGF per one I.U. of GH. IGF-1 acts on several different tissues to enhance growth. IGF1 belongs in the 'superfamily' of substances known as 'growth factors,' along with epidermal (skin), transforming; platelet derived fibroblast, nerve, and ciliary neurotrophic growth factors. None of the other factors have any bearing on exoskeletal tissue incidentally however These agents all have in common the ability to stimulate cell division, known as mitogenesis, and cell differentiation. Meaning That In the case of IGF1 which does act on muscle tissue it will initiate the growth of new muscle fibers, and subsequently new receptors for testosterone. Users have unanimously concluded that it enhances cycles of steroids significantly. They also seem to be adamant about its ability to reduce fat and improve vascularity a great deal.

The IGF1 Hype

There is a considerable amount of hype surrounding IGF1. Every one is blaming the distended bellies of modern Bodybuilders on it. Also the freaky proportions that old bodybuilders that have been around for years are starting to attain. Anti-aging proponents are touting it as the miracle cure for every thing from Parkinson's disease to Alzheimer's. And the medical community has published numerous articles on it for its ability to cause cancer, diabetes and gigantism. While at the same time performing documented experiments on thousands of patients of muscle wasting diseases. And reporting significant turnabouts in there conditions. So what is a guy to think about IGF1 as far as athletic enhancement is concerned? Well first of all you need to know that most experiments conducted with IGF1 do not list the type of IGF used. I have written Dr. Robert Saline of the Swedish rejuvenation institute on several occasions and we have had in-depth discussions on the subject of IGF1 for physical appearance enhancement. He feels it would be unethical to prescribe IGF1 to a bodybuilder to increase muscle mass simply due to the fact that IGF1 has valid applications in the medical community, (Like I could give a rats ass about "ethical"). He can not argue that it is extremely effective as a promoter of muscle growth far beyond what androgens (steroids) alone can offer. Well fortunately in America IGF1 is not a drug (yet) and the FDA has no control over it as of now. This will change in the very near future however, Im absolutely sure of it.

How to use IGF1

Assuming that you have acquired legitimate IGF1 (R3) long chain, That's IGF1 with the binding protein added. You should take dosages ranging from 60mcg up to 120mcg per day in divided doses. One injection in the morning and again at bed time. Never exceed 120mcg in one day. IGF1 can cause serious gastrointestinal problems such as tumors intestinal swelling diarrhea and vomiting. Most IGF1 comes in a concentration of 1000mcg per ML or CC so it makes it easy to measure in an insulin syringe. 10 IU on the syringe is 100mcg. Do the math.

IGF + Insulin

If you plan on doing IGF1 with Insulin, listen closely IGF1 is not that expensive, sure you can get away with using less by including insulin in the stack, but IGF1 and Insulin together have a pro-insulin effect on your blood sugar balance. It can enhance the chances of a hypoglycemic episode ten fold. I would recommend against it for any one not ABSOLUTLY comfortable with insulin or IGF1.

Here is how insulin and IGF1 work together. Igfbp3 is the binding protein, which allows IGF1 to remain active in the system for a long enough period of time to really work its magic. IGF1 by nature has a half-life of less than 10 minutes by its self. The molecule was so small it would escape the blood stream very rapidly. This was the reason IGF1 was so "underground". It took very frequent injections at high dosages to achieve even minimal results. Aside from this reconstituting the compound required a degree in biochemistry. This short acting version was the only IGF1 known until recently IGF1 would have been administered in 100 mcg dosages 4-6 times a day. That is a hell of a lot of IGF1. That explains a lot of the distended bellies. Now with R3 long chain IGF1 and the Binding protein IGFBP3 IGF1 will last up to 6 hours in the system. By binding IGF to the IGFBP3 you make the molecule larger and it gets trapped in the blood stream until the protein is broken down and the IGF molecule escapes. You can further its life by combining Insulin with it, although I here its very risky. Insulin prevents the breakdown of IGFBP3 and leaves the IGF1 molecule roaming free in the blood stream for longer periods of time up to 12 hours as insulin levels return to normal IGFBP3 will begin to break down and the IGF1 will escape from its bound protein IGFBP3 again having a half life of less than 10 minutes.

Insulin should be taken at the normal dosage it is usually administered at minus 10% about 45 minutes prior to the IGF1 infusion. Again let me remind you this can be deadly if you don't know what you are doing. And of course do not use Insulin for the nighttime injection of IGF1 by taking it in the morning you prolong the IGF1's half life to 12 hours and then take a 6 hour injection, you should be fine. Hell if you want to eat a big bowl of rice and drink another 100g of simple carbs 45 minutes before the bed time IGF1 infusion you could spike insulin for at least a few hours of extended IGF1 activity. If your not going to be using insulin in the stack then go ahead and do the same in the morning.

What users report

Users of IGF1 have reported various results but all along the same lines, It does not appear to be dramatically less effective in any one individual (at least not to the best of my knowledge). I have a good friend who had to stop taking IGF1 due to stomach illness that was completely unrelated But he to experienced good gains from it for the 2 weeks he was on it, his dosage was 120mcg per day. One hour after the first injection he went to the gym and immediately told me about the uncontrollable pump he got from just one set.

That would indicate to me that he was experiencing some form of cell volumization. The general consensus on IGF1 seems to be that its benefits are as fallow:

Increased Pump Pumps are reported to be so severe that workouts are often cut short due to lack of ability to the muscle through the full range of motion...ouch

Gains retention is increased if IGF is used in a cycle I am not sure why, but IGF1 seems to make gains on a cycle stick with virtually no post cycle loss. Every bodybuilder I've spoken with seems to think this for some reason. Most of them use drugs like Anadrol or Dianabol with it because of the amount of size attained with these drugs. The usual draw back to these drugs is that in most users there is a post cycle "crash" that occurs, so the reasoning is to toss IGF1 into the stack and grow larger faster with out the post cycle crash blues.

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Reverses testicular atrophy

Testicles if shrunken will return to "full swing" so to speak even in the middle of a cycle. If not shrunken they will not shrink during the cycle. This may explain partially why gains are kept after the cycle.

Fatigue

Users report feeling drained and tired all day. This seems to be one of the negative side effects to IGF1, it will make you sleep longer and you will require more sleep at night to feel rested for the morning. This is common with high doses of HGH and exhibited in children, whose IGF1 levels are extraordinarily high. A child needs 4 hours more sleep than an adult on average does. This may be directly or indirectly related to IGF1 levels.

Stiffness

An almost arthritic feeling is commonly associated with high levels of HGH, well IGF1 has the exact same property. IGF1 will cause your hands, fingers and knuckles to ache this is one way you can be sure you got real IGF1.

IGF-1's Side effects

Every thing has a down side. To bake a cake ya gotta brake an egg. IGF1 is no exception. The drug used in larger quantity around the 100mcg+ range will cause headaches, occasional nausea and can contribute to low blood sugar or hypoglycemia in some users. Although I have never heard of this first hand I'm sure its true.

IGF1 will attach its self to the lining of the intestine and cause atrophy of the gut. Every thing IGF1 touches will grow and you have a lot of receptors on the lining of the large intestine and inner wall of the abdominal well. This is what causes the GH gut look. You can easily avoid this by limiting your dosages and cycle lengths. IGF1 cycles should be kept to 4-6 weeks with 4-6 weeks off in-between. IGF-1 is considerably more powerful than HGH and you need to think of it along those lines as far as dosing goes. We all know what to much HGH can do over prolonged periods of usage. The Neanderthal look is definitely not going to win any shows this year. I would recommend 80 mcg a day for 4 weeks at a time you should get good results from that for a while. I don't know if you will need to up the dosage at any point, but I would think in the case of IGF1 it wouldn't matter. If 80mcg doesn't do it for ya, then bump it up to 100 You should definitely feel it at this point If not suspect the IGF1 as being fake. Beyond 120 mcg per day your asking for trouble, This compound demands as much respect as its sister amino Insulin.

Clinical Facts about IGF-1

IGF-1 is a polypeptide of 70 amino acids (7650 daltons), and is one of a number of related insulin-like growth factors present in the circulation. The molecule shows approximately 50% sequence homology with proinsulin and has a number of biological activities similar to insulin. IGF-1 is a mediator of longitudinal growth in humans or how tall you are capable of becoming. Serum IGF-1 concentrations are altered by age, nutritional status, body composition, and growth hormone secretion. A single basal IGF-1 level is useful in the assessment of short stature in children and in nutritional support studies of acutely ill patients. For the diagnosis of acromegaly, a single IGF-1 concentration is more reliable than a random hGH measurement (Oppizi, et al., 1986). IGF-1 can be used for the assessment of disease activity in acromegaly (Barkan, et al., 198.

Almost all (>95%) of serum IGF-1 circulates bound to specific IGF binding proteins (IGFBPs), of which six classes (IGFBPs 1-6) have been identified (Rudd, 1991). BP3 is thought to be the major binding protein

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**New Studies showing increased Stability of IGF-I

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Stability Data for LongTMR3IGF-I (Liquid Formulations)

The stability of a liquid solution of LongTMR3IGF-I was monitored for a period of two years at storage conditions of -20 C, +4 C, +22 C, and +37 C. The final concentration of LongTMR3IGF-I was in acetic acid. At various time points, samples were taken and compared to a lyophilized control (stored at 4 C). Listed below are the stability results for each respective storage condition.


 Storage Condition: -20 C


Biological Potency No Change up to 2 years
Immunological Activity No Change up to 2 years
Mobility of Protein No Change up to 2 years
Elution Profile by reversed phased HPLC No Change up to 2 years


 Storage Condition: +4 C


Biological Potency No Change up to 2 years
Immunological Activity No Change up to 2 years
Mobility of Protein No Change up to 2 years
Elution Profile by reversed phased HPLC No Change up to 2 years


 Storage Condition: +22 C


Biological Potency No Change up to 2 years
Immunological Activity No Change up to 2 years
Mobility of Protein No Change up to 2 years
Elution Profile by reversed phased HPLC No Change up to 2 years


 Storage Condition: +37 C


Biological Potency No Change up to 1 year
Immunological Activity No Change up to 1 year
Mobility of Protein No Change up to 1 year
Elution Profile by reversed phased HPLC No Change up to 1 year


 Conclusions

o There is no significant difference in the potency of LongTMR3IGF-I associated with the storage of the liquid formulation when stored at this range of temperatures.
o There is no evidence for loss of biological activity at any of the tested temperatures when stored as a liquid product.

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Example of some one using it:

Although IGF-1 is a peptide and not part of the AAS family...it is very similar to a fast ester in half-life. The goal here should be the same as AAS...which is to keep blood concentration levels even day in and day out. Here is a typical week while on IGF-1. I do run T3 at 50mcg(split am/noon) when running Igf-1 which acts as a catalyst as much of you already know.

Day 1 thru 2...Workout ends at 7:30am I shoot 40mcg's bi-latteraly into the muscles just worked...this means I am shooting 80mcg's total. The half life of IGF-1 is typically 12 hours. In order to keep blood levels peaked I will shoot an additional 40mcg's bi-latteraly into the same muscles worked this morning.

Day 3 OFF DAY...I hear a lot of talk about not shooting IGF-1 on off days that it is a waist and what not....BULLSHIT!!! I treat this the same as a workout day. The question is this...where do I shoot it??? This is the important part that most Pro's will not tell you. Day 2 should be the lagging body part...or the day you should work out the muscle that you want to get bigger in the shortest amount of time. Thats right Boys...shoot the same muscle today that you shot on day 2.

Days 4 and 5 then repeats with a day off.

My cycle generally lasts a lil longer than most because I typically run HGH year around. So...that is another issue...dealing with satellite cell mitosis.

For those of use using LR3 and noticing gains decreasing after 4-5 weeks, this could very well be due to LR3's suppression of our endogenous GH, which is occuring with use of exogenous IGF-1, and therefore a decreased rate of satellite cell mitosis. The first time I used LR3 I was not using GH at the time, and my gains seemed to slow at the 4 week mark. I'd heard others having the same effects, so I wrote it off as a fact that 4 week cycles were the best, beyond which, gains were harder to achieve. On subsequent cycles of LR3, I have always been using GH with them but have stopped the cycles after 4 weeks due to my earlier conclusion that gains slowed substantially after 4 weeks. Next cycle will be as long as I continue to see good gains, since I'll be using GH along with it again.

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I feel like I ought to offer some more thoughts, with respect to IGF-1.

I begin by saying that I've used the stuff on myself, under several different regimens. But, more importantly, I've now worked with quite a number of other athletes, using IGF-1. In these situations, I've had control over the dosage, administration, and diet. And I've prepared the IGF-1 injectable under standardized conditions, using appropriate buffers. I would receive regular reports and observations from the users. While I do not consider my data to have a sample size which would stand a test of statistical validity, my data base is larger and better quality than the individual anecdotal observations seen in board threads.

There are a tremendous number of issues, not directly related to IGF response, and I'll discuss them, first.

There are a number of boards which are seen as authorities for good information, yet are polluted by members and mods who are directly connected with IGF dealers. Furthermore, there are buyers who have been induced to act as shills. These people never identify their roles, and they have completely muddied the waters with their hype and outright lies. For example, I know of one guy who is an IGF powder middleman, and he has managed to get himself known as an IGF "expert", even though he has absolutely no science background. He goes around from board to board belching out some of the most absurd hype I've ever seen, all the while hustling people to buy their IGF from the company he sells his powder to.

Then there are the ones who have some decent knowledge, but have gotten their knowledge all mixed up. In that thread cited, above, from the Cutting Edge Muscle board, one member posts about how good he thinks IGF is, then he offers a proposed ideal diet for maximizing the effect of IGF. Well, if you look at that diet, you will realize that you can do that diet, and put on 5-6 pounds easy, and not use any IGF-1! It's the diet that is making you grow, not the IGF!! Just ridiculous!!! Anyone should be able to see through that sort of nonsense, yet IGF is seen as such a "Holy Grail", that things like this are overlooked.

Another class of post is by those who don't fully understand what is happening, when they use IGF-1. Yes, some legit research has shown that IGF can multiply muscle fiber. But it is clear to me that the bulk of the response to IGF comes from it's ability to act as a sensational glucose disposal agent. This is the part where IGF's name, "Insulinlike", comes to the fore. IGF can send you into ketosis with ease. Good responders to IGF are hungry all the time, because the blood glucose is held low. All that glycogen is being driven into the muscles. The frequent reports of muscle fullness and vascularity is the result of muscles being pumped full of glycogen and water.

There is too little mention of the non-responders to IGF-1. They definitely exist. But identifying the percentage of them in the population is difficult, due to the way most IGF is being sold. I'll discuss that, next.

The business is rife with misinformation on how to properly prepare the IGF-1 for use. The ONLY proper way to rehydrate IGF-1 for use, where it will be at full strength and activity, is with an aqueous buffer solution, which has the proper pH and ionic(salt) content. However, it is not easy or safe for the average user to prepare such a buffer, and access to the raw materials is limited.

A couple of years ago, Animal concocted the idea of dissolving the IGF he was selling, in some BA. He perhaps did not have access to the proper buffer materials, and he came up with this idea, in order to promote his business. Well, it sort of worked. But some, if not most, of the IGF is rendered useless by this method, since you need the correct pH and ionic environment for the peptide chains to unwind. In the end, you have to use a lot of IGF, just to get the effect which you would get, if you had properly rehydrated it with a buffer. In my work, using a proper buffer, the maximum dosage per day is 30 mcg. But I've seen good results on only 15 to 20 mcg's per day. It is typical for users with the Animal type product to have to use 50 to 120 mcg per day, to see any effect at all.

Still another absurd notion is that you do not have to refridgerate the IGF in BA. I have seen some idiot "experts" recommend that "IGF-1 works better if you store it in your sock drawer".

Now, I'm a chemist, and I've worked in biochem labs, and seeing all this online nonsense about preparing IGF really makes me crazy. But, let's use a little common sense. Both IGF-1 and hGH are chain sequenced peptides. So, they are in the same family. Now, we all know that you rehydrate GH with an aqueous solution and we must store it under refridgeration. Yet, these "experts" say we can reconstitute IGF-1 with BA and it does not require any refridgeration. I ask you, have any of you ever seen anyone recommend that we reconstitute GH with BA, and that we not store it under refridgeration? I certainly never have. It seems to me that this would be a real breakthrough, right? Not a single legit biochemist has ever advocated the BA method for preparing chain sequenced peptides. Again, I have never seen one of these online "experts" advocate using BA for preparing GH, yet GH and IGF-1 are in the same family. Now, doesn't that tell you something??

So, you may begin with some active IGF in these BA preparations, but you end up with less and less, as it degrades.

Then there is the shipping. Ever wonder why we don't buy hGH in reconstituted form? Aside from having to keep it cold, all the shaking and agitation, which goes on in shipping and transportation, would destroy the peptide chains. Yet these "experts" say there's no problem in selling and transporting IGF-1 in liquid form. Are we to believe that BA creates some wondrous, new, indestructable environment for peptide chains?

So, now we go a step further. We begin with some active IGF in the BA preparation, but it degrades, and then we ship it, and then we lose still more and more.

By the time you end up with it, in your hands, there is little or no active IGF-1. So, now, how do we determine who is a IGF non-responder, and who simply has gotten a ruined bottle of IGF-1? How do we determine the full range of response in the population, when the IGF-1 in the field is of random strength and unknown concentration?

All these problems make a complete assessment of the true worth of IGF-1 very difficult. The buyer thinks he has 1000 mcg per ml of IGF-1, when, in reality, he has much less, maybe even none.

It is my contention that much of the weight gain, seen by IGF-1 users, is water. Their muscles appear to be growing, but it is glycogen and water. Some will respond in extreme. I had one user put on almost 15 pounds. All water! Three days after his IGF cycle ended, the water was gone, and so was the weight gain. So, we are mostly seeing bloat, to a greater or lessor degree, rather than spectacular muscle growth. This accounts for all the stories of giant pumps, while training on IGF-1.

I'm not convinced that there is really significant muscle growth. But I am convinced that there is bodyfat loss. As I mentioned, if your carbs are low enough, IGF-1 will get you into ketosis quickly, and then bodyfat loss will proceed accordingly.

IGF-1 is not useless. IGF-1 is, at present, a very specialized tool. I think it's best use comes with bulking. Through its very powerful glucose disposal effect, a responder is always hungry, and the nutrition is pumped into the muscles. People who have difficulty eating while bulking, may find that they have fewer problems packing in that food. But, if you're an ectomorph, that will result in a much greater food demand, since you will need to eat more to compensate for the loss in blood glucose. You will most certainly have to eat in the middle of the night, due to hunger.

IGF-1 is also useful while cutting, but it really makes you crave carbs, and, if you're not interested in going keto, then you end up having to eat more carbs than you would, otherwise. The glycogen pumping effect is anti catabolic, however.

But that's about it, as far as I'm concerned.

If you are to make the best use of IGF-1, then the preparation of the buffer will be a serious handicap. The starting materials are not easy to obtain, and the handling and storage of these chemicals is dangerous and difficult. If you prepare the buffer with the wrong pH, then you will completely destroy the IGF-1, the moment you add it to the buffer. You better know what you are doing, and have the correct equipment with which to do it.

There are so many more cost effective and productive ways to spend your money on muscle building, than with IGF-1. If you're adventurous, done plenty of research, and have a wad of cash, then go ahead and give it a try. But IGF-1 is not the Holy Grail of bodybuilding.

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ok couple things on igf

1. it is fda approved under the name Increlex

2. igf is stable in predilluted form from groprep. GP supplies 3 companies with their igf. It is media grade 70% pure. It is reasily available. Same with igtropin from gensci. one of the major sources for groprep igf is switching to generic. price is around $120/mg

3. generic is available from a couple different sources but most of it comes from one prominent source that sells to the other labs in bulk. He has it produced for him in china and the peptide is 85-90% pure. This igf is much much better then the predilluted igf. It comes in a multidose vial(about the size of a 5ml vial) with a light cky blue flip top and contains 1mg of powder in which the vial is nitrogen sealed. Most sources sell it in a kit with the solutions you need to use it. price is around $100/mg.

4.there is 95% pure igf available. If anybody says they have better in the lr3 form they are lying. It is not available as I know every manufacture in china and it is not made as of right now. maybe in the near future it will be but not yet. price if domestic will run around $150/mg.

5. igf in predilluted form can only stay at room temp around 7-10 days before it needs to be refridgerated. Where as generic is like jino, as it can stay at room temp for 30 days but neither should be exposed to conditions over 81 degrees as the peptide will degrade quickly.

ok this is my theory on how igf should be run and in no way am i saying this is the only way, but i feel this is the best way.

1. igf should be run before and after a cycle.

2. run it before to cause hyperplasma. This allows the new cells to have time to grow during the cycle.

3. Run it pct to keep gains or even keep gaining. I feel during cycle pct should consist of hcg on and off throughout a cycle, an antie if need me such as arimidex or Aromasin. only if need be though. After cycle pct should consist of igf/nolva/clomid/pgfa2 if fat loss is wanted.

4. igf should be shot bilaterally in the muscle group you just worked out. It should be shot at night in the muscle group you plan on working the next day. On off days it should be shot in your laggin muscle group in the morning and in the muscle group you plan to work the next day at night. Reason for this is it allows you to work the newly formed tissue.

5. some type of extreme stretching is very very important if you ask me because it cause further hyperplasma.

6. running igf with gh is best because it allows you to run it longer with continued gains.

7. last thing don't always expect to gain weight when using igf as fat loss will be extreme and sometimes fat weight loss outweighs muscle weight gained.

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Understanding IGF-1
By Bryan Haycock

To understand how IGF-1 works you have to understand how muscles grow. The ability of muscle tissue to constantly regenerate in response to activity makes it unique. It’s ability to respond to physical/mechanical stimuli depends greatly on what are called satellite cells. Satellite cells are muscle precursor cells. You might think of them as "pro-muscle" cells. They are cells that reside on and around muscle cells. These cells sit dormant until called upon by growth factors such as IGF-1. Once this happens these cells divide and genetically change into cells that have nuclei identical to those of muscle cells. These new satellite cells with muscle nuclei are critical if not mandatory to muscle growth.

Without the ability to increase the number of nuclei, a muscle cell will not grow larger and its ability to repair itself is limited. The explanation for this is quite simple. The nucleus of the cell is where all of the blue prints for new muscle come from. The larger the muscle, the more nuclei you need to maintain it. In fact there is a "nuclear to volume" ratio that cannot be overridden. Whenever a muscle grows in response to functional overload there is a positive correlation between the increase in the number of myonuclei and the increase in fiber cross sectional area (CSA). When satellite cells are prohibited from donating new nuclei, overloaded muscle will not grow (Rosenblatt,1992 & 1994; Phelan,1997). So you see, one important key to unnatural muscle growth is the activation of satellite cells by growth factors such as IGF-1.

IGF-1 stimulates both proliferation (an increase in cell number) and differentiation (a conversion to muscle specific nuclei) in an autocrine-paracrine manner, although it induces differentiation to a much greater degree. This is in agreement with the Dual Effector theory. In fact, you can inject a muscle with IGF-1 and it will grow! Studies have shown that , when injected locally, IGF-1 increases satellite cell activity, muscle DNA content, muscle protein content, muscle weight and muscle cross sectional area (Adams,1998).

On the very cutting edge of research scientists are now discovering the signaling pathway by which mechanical stimulation and IGF-1 activity leads to all of the above changes in satellite cells, muscle DNA content, muscle protein content, muscle weight and muscle cross sectional area just outlined above. This research is stemming from studies done to explain cardiac hypertrophy. It involves a muscle enzyme called calcineurin which is a phosphatase enzyme activated by high intracellular calcium ion concentrations (Dunn, 1999). Note that overloaded muscle is characterized by chronically elevated intracellular calcium ion concentrations. Other recent research has demonstrated that IGF-1 increases intracellular calcium ion concentrations leading to the activation of the signaling pathway, and subsequent muscle fiber hypertrophy (Semsarian, 1999; Musaro, 1999). I am by no means a geneticist so I hesitated even bringing this new research up. In summary the researchers involved in these studies have explained it this way, IGF-1 as well as activated calcineurin, induces expression of the transcription factor GATA-2, which accumulates in a subset of myocyte nuclei, where it associates with calcineurin and a specific dephosphorylated isoform of the transcription factor nuclear factor of activated T cells or NF-ATc1. Thus, IGF-1 induces calcineurin-mediated signaling and activation of GATA-2, a marker of skeletal muscle hypertrophy, which cooperates with selected NF-ATc isoforms to activate gene expression programs leading to increased contractile protein synthesis and muscle hypertrophy. Did you get all that?

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IGF-1 Usage
By Author Unkown

IGF stands for insulin-like growth factor. It is a natural substance that is produced in the human body and is at its highest natural levels during puberty. During puberty IGF is the most responsible for the natural muscle growth that occurs during these few years. There are many different things that IGF does in the human body; I will only mention the points that would be important for physical enhancement. Among the effects the most positive are increased amino acid transport to cells, increased glucose transport, increased protein synthesis, decreased protein degradation, and increased RNA synthesis.

When IGF is active it behaves differently in different types of tissues. In muscle cells proteins and associated cell components are stimulated. Protein synthesis is increased along with amino acid absorption. As a source of energy, IGF mobilizes fat for use as energy in adipose tissue. In lean tissue,

IGF prevents insulin from transporting glucose across cell membranes. As a result the cells have to switch to burning off fat as a source of energy.

IGF also mimic's insulin in the human body. It makes muscles more sensitive to insulin's effects, so if you are a person that currently uses insulin you can lower your dosage by a decent margin to achieve the same effects, and as mentioned IGF will keep the insulin from making you fat.

Perhaps the most interesting and potent effect IGF has on the human body is its ability to cause hyperplasia, which is an actual splitting of cells. Hypertrophy is what occurs during weight training and steroid use, it is simply an increase in the size of muscle cells. See, after puberty you have a set number of muscle cells, and all you are able to do is increase the size of these muscle cells, you don't actually gain more. But, with IGF use you are able to cause this hyperplasia which actually increases the number of muscle cells present in the tissue, and through weight training and steroid usage you are able to mature these new cells, in other words make them grow and become stronger. So in a way IGF can actually change your genetic capabilities in terms of muscle tissue and cell count. IGF proliferates and differentiates the number of types of cells present. At a genetic level it has the potential to alter an individuals capacity to build superior muscle density and size.

There is a lot of talk about the similarity between IGF and growth hormone. The most often asked question is simply which is more effective. GH doesn't directly cause your muscles to grow, it works very indirectly by increasing protein synthesis capabilities, increasing the amount of insulin a person can use effectively, and increasing the amount of anabolic steroids a person can use effectively. GH also indirectly causes muscle growth by stimulating the release of IGF when it (the GH) is destroyed in the human body. So one way you could look at it as GH being a precursor to IGF. So to put it simple IGF is more effective at directly causing muscle growth and density increases. IGF is also much more cost effective.

IGF can also be effectively used by itself and gains will still be easily noticeable. With growth hormone you need to use high amounts of anabolics and often insulin to see any gains at all, this is not the case with IGF. IGF can be used by itself and is often used by bodybuilders who bridge between cycles, during this bridge is a good time to use IGF since it has no effect on natural testosterone production so it will therefore allow you to return to normal in terms of hormone levels. A stack of IGF, PGF2a, HCG, and clomid would be a good bridge stack and would allow your body to return to normal and still allow you to retain and make new gains.

IGF is a research drug, it hasn't been approved by the FDA for use as a pharmaceutical and it is currently being researched for nerve tissue repair, possible burn victims, and also as a possible aid in muscle wasting for AIDS patients. There are many different analogs of IGF available, instead of mentioning them all, I will simply mention the two most common and the most effective. Regular recombinant IGF is one of the two, it is also the more expensive and the least effective. Regular IGF only has a half-life of about 10-20 minutes in the human body and is quickly destroyed, it can be combined with certain binding proteins to extend the half-life, but it is not a very simple procedure and there is a more effective and less expensive version available. The most effective form of IGF is Long R3 IGF-1, it has been chemically altered and has had amino acid changes which cause it to avoid binding to proteins in the human body and allow it to have a much longer half life, around 20-30 hours. "Long R3 IGF-1 is an 83 amino acid analog of IGF-1 comprising the complete human IGF-1 sequence with the substition of an Arg(R) for the Glu(E) at position three, hence R3, and a 13 amino acid extension peptide at the N terminus. This analog of IGF-1 has been produced with the purpose of increasing the biological activity of the IGF peptide."

"Long R3 IGF-1 is signifacantly more potent than IGF-1. The enhanced potency is due to the decreased binding of Long R3 IGF-1 to all known IGF binding proteins. These binding proteins normally inhibit the biological actions of IGF's."

It is also not as expensive since a media grade version is available which is sufficient for bodybuilding use. There is also a receptor grade available but it is VERY expensive and the only noticeable difference between the two would only be able to be noticed in a laboratory setting. The price on the black market for Long R3 IGF-1 can be seen anywhere from $200-$500 per milligram depending on the source.

The most effective length for a cycle of IGF is 50 days on and 20-40 days off. The most controversy surrounding Long R3 IGF-1 is the effective dosage. The most used dosages range between 20mcg/day to 120+mcg/day. IGF is only available by the milligram, one mg will give you a 50 day cycle at 20mcg/day, 2mg will give you a 50 day cycle at 40mcg/day, 3mg will give you a 50 day cycle at 60mcg/day, 4mg will give you a 50 day cycle at 80mcg/day and so on. The dosage issue mainly revolves around how much money you have to spend, plenty of people use the minimum dosage of 20mcg/day and are happy with the results, and in fact several top bodybuilders use the 20mcg/day dosage and are pleased with the results. IGF is most effective when administered subcutaneously and injected once or twice daily at your current dosage. The best time for injections is either in the morning and/or immediately after weight training.

Another frequently asked question of IGF refers to the real world results, in terms of pure weight gain don't expect to gain 5 lbs. a week like you may off of anadrol or a similar steroid. The only weight you will gain from IGF use is pure lean muscle tissue, with steroids most of the weight gained is water weight. With an effective dosage you can expect to gain 1-2 lbs of new lean muscle tissue every 2-3 weeks and these effects can be increased with the use of testosterone, anabolic steroids, and insulin use. Increased vascularity is also very common, people report seeing veins appear where they never have before. And yet another effect reported is the ability to stay lean while bulking with heavy dosages of steroids and TONS of food while on an IGF cycle, this is perhaps the most pleasing effect. Increased pumps are also noticeable almost immediately, the pumps can almost become painful, pumps are even noticeable when doing cardio.

Overall, IGF is a very exciting drug due to its ability to alter ones genetic capabilities. If you can find a trustworthy source and you use it correctly it can be a VERY useful tool in your bodybuilding drug arsenal.

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don't buy oral or premixed IGF-1LR3 you will waist your money..

(Maybe someone could shed some light on this, i'm not sure why they are saying this i think its stability issue)

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On a good note it seems everyone that has used it says the gains are PERMANENT GAINS due to hyptrophey(sp) muscle splitting and makes perm muscle..

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IGF-1 (its legal, kind of)

From Harvery Baloner @ MC

(note some sources do carry it in vials now this article is a little outdated)

IGF stands for insulin-like growth factor. It is a natural substance that is produced in the human body and is at its highest natural levels during puberty. During puberty IGF is the most responsible for the natural muscle growth that occurs during these few years. There are many different things that IGF does in the human body; I will only mention the points that would be important for physical enhancement. Among the effects the most positive are increased amino acid transport to cells, increased glucose transport, increased protein synthesis, decreased protein degradation, and increased RNA synthesis.

When IGF is active it behaves differently in different types of tissues. In muscle cells proteins and associated cell components are stimulated. Protein synthesis is increased along with amino acid absorption. As a source of energy, IGF mobilizes fat for use as energy in adipose tissue. In lean tissue, IGF prevents insulin from transporting glucose across cell membranes. As a result the cells have to switch to burning off fat as a source of energy.
IGF also mimic's insulin in the human body. It makes muscles more sensitive to insulin's effects, so if you are a person that currently uses insulin you can lower your dosage by a decent margin to achieve the same effects, and as mentioned IGF will keep the insulin from making you fat.

Perhaps the most interesting and potent effect IGF has on the human body is its ability to cause hyperplasia, which is an actual splitting of cells. Hypertrophy is what occurs during weight training and steroid use, it is simply an increase in the size of muscle cells. See, after puberty you have a set number of muscle cells, and all you are able to do is increase the size of these muscle cells, you don't actually gain more. But, with IGF use you are able to cause this hyperplasia which actually increases the number of muscle cells present in the tissue, and through weight training and steroid usage you are able to mature these new cells, in other words make them grow and become stronger. So in a way IGF can actually change your genetic capabilities in terms of muscle tissue and cell count. IGF proliferates and differentiates the number of types of cells present. At a genetic level it has the potential to alter an individuals capacity to build superior muscle density and size.

There is a lot of talk about the similarity between IGF and growth hormone. The most often asked question is simply which is more effective. GH doesn't directly cause your muscles to grow, it works very indirectly by increasing protein synthesis capabilities, increasing the amount of insulin a person can use effectively, and increasing the amount of anabolic steroids a person can use effectively. GH also indirectly causes muscle growth by stimulating the release of IGF when it (the GH) is destroyed in the human body. So one way you could look at it as GH being a precursor to IGF. So to put it simple IGF is more effective at directly causing muscle growth and density increases. IGF is also much more cost effective.
IGF can also be effectively used by itself and gains will still be easily noticeable. With growth hormone you need to use high amounts of anabolics and often insulin to see any gains at all, this is not the case with IGF. IGF can be used by itself and is often used by bodybuilders who bridge between cycles, during this bridge is a good time to use IGF since it has no effect on natural testosterone production so it will therefore allow you to return to normal in terms of hormone levels. A stack of IGF, PGF2a, HCG, and clomid would be a good bridge stack and would allow your body to return to normal and still allow you to retain and make new gains.

IGF is a research drug, it hasn't been approved by the FDA for use as a pharmaceutical and it is currently being researched for nerve tissue repair, possible burn victims, and also as a possible aid in muscle wasting for AIDS patients. There are many different analogs of IGF available, instead of mentioning them all, I will simply mention the two most common and the most effective. Regular recombinant IGF is one of the two, it is also the more expensive and the least effective.

Regular IGF only has a half-life of about 10-20 minutes in the human body and is quickly destroyed, it can be combined with certain binding proteins to extend the half-life, but it is not a very simple procedure and there is a more effective and less expensive version available. The most effective form of IGF is Long R3 IGF-1, it has been chemically altered and has had amino acid changes which cause it to avoid binding to proteins in the human body and allow it to have a much longer half life, around 20-30 hours. "Long R3 IGF-1 is an 83 amino acid analog of IGF-1 comprising the complete human IGF-1 sequence with the substition of an Arg(R) for the Glu(E) at position three, hence R3, and a 13 amino acid extension peptide at the N terminus. This analog of IGF-1 has been produced with the purpose of increasing the biological activity of the IGF peptide."
"Long R3 IGF-1 is signifacantly more potent than IGF-1. The enhanced potency is due to the decreased binding of Long R3 IGF-1 to all known IGF binding proteins. These binding proteins normally inhibit the biological actions of IGF's."

It is also not as expensive since a media grade version is available which is sufficient for bodybuilding use. There is also a receptor grade available but it is VERY expensive and the only noticeable difference between the two would only be able to be noticed in a laboratory setting. The price on the black market for Long R3 IGF-1 can be seen anywhere from $300-$500 per milligram depending on the source, be wary of black market ******s of any IGF since it is a VERY difficult item to obtain. As mentioned IGF is a research product and is only available from a few laboratories in the world and is only available to research companies and biotechnology institutions. For the rest of this article when I say IGF I am now referring to Long R3 IGF-1 for simplicity sake.
Any form of IGF is ONLY supplied in a lyphosized form, which means a dry powder state. NEVER PUCHASE PRE-DILUTED LIQUID IGF!!!! There is no such product made anywhere in the world and even if there were real IGF ever present in the vial it would all be dead by the time you receive it. IGF is a very delicate peptide and must be diluted by yourself, where you have access to a refrigerator and freezer. There has also been a lot of talk by certain sources claiming to have IGF made by the Eli Lilly company, to clear things up Lilly is a pharmaceutical company and as stated IGF is a research drug and has not yet been approved, Lilly does not and never has manufactured research drugs for retail sale.

The dilutents you will need for the IGF are a weak concentration of hydrochloric acid and a sterile buffer(sterile water or bacteriostatic water) the procedure for diluting the IGF is not very difficult, the dilutents can be obtained from most local chemical suppliers and a good source of IGF would also be able to supply the necessary dilutents.

The most effective length for a cycle of IGF is 50 days on and 20-40 days off. The most controversy surrounding Long R3 IGF-1 is the effective dosage. The most used dosages range between 20mcg/day to 120+mcg/day. IGF is only available by the milligram, one mg will give you a 50 day cycle at 20mcg/day, 2mg will give you a 50 day cycle at 40mcg/day, 3mg will give you a 50 day cycle at 60mcg/day, 4mg will give you a 50 day cycle at 80mcg/day and so on. The dosage issue mainly revolves around how much money you have to spend, plenty of people use the minimum dosage of 20mcg/day and are happy with the results, and in fact several top bodybuilders use the 20mcg/day dosage and are pleased with the results. IGF is most effective when administered subcutaneously and injected once or twice daily at your current dosage. The best time for injections is either in the morning and/or immediately after weight training.

Another frequently asked question of IGF refers to the real world results, in terms of pure weight gain don't expect to gain 5 lbs. a week like you may off of anadrol or a similar steroid. The only weight you will gain from IGF use is pure lean muscle tissue, with steroids most of the weight gained is water weight. With an effective dosage you can expect to gain 1-2 lbs of new lean muscle tissue every 2-3 weeks and these effects can be increased with the use of testosterone, anabolic steroids, and insulin use. Increased vascularity is also very common, people report seeing veins appear where they never have before. And yet another effect reported is the ability to stay lean while bulking with heavy dosages of steroids and TONS of food while on an IGF cycle, this is perhaps the most pleasing effect. Increased pumps are also noticeable almost immediately, the pumps can almost become painful, pumps are even noticeable when doing cardio.

Overall, IGF is a very exciting drug due to its ability to alter ones genetic capabilities. If you can find a trustworthy source and you use it correctly it can be a VERY useful tool in your bodybuilding drug arsenal
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From Scorpio @ MC -
IGF-1: How does it work?

To understand how IGF-1 works you have to understand how muscles grow. The ability of muscle tissue to constantly regenerate in response to activity makes it unique. It’s ability to respond to physical/mechanical stimuli depends greatly on what are called satellite cells. Satellite cells are muscle precursor cells. You might think of them as "pro-muscle" cells. They are cells that reside on and around muscle cells. These cells sit dormant until called upon by growth factors such as IGF-1. Once this happens these cells divide and genetically change into cells that have nuclei identical to those of muscle cells. These new satellite cells with muscle nuclei are critical if not mandatory to muscle growth.

Without the ability to increase the number of nuclei, a muscle cell will not grow larger and its ability to repair itself is limited. The explanation for this is quite simple. The nucleus of the cell is where all of the blue prints for new muscle come from. The larger the muscle, the more nuclei you need to maintain it. In fact there is a "nuclear to volume" ratio that cannot be overridden. Whenever a muscle grows in response to functional overload there is a positive correlation between the increase in the number of myonuclei and the increase in fiber cross sectional area (CSA). When satellite cells are prohibited from donating new nuclei, overloaded muscle will not grow (Rosenblatt,1992 & 1994; Phelan,1997). So you see, one important key to unnatural muscle growth is the activation of satellite cells by growth factors such as IGF-1.

IGF-1 stimulates both proliferation (an increase in cell number) and differentiation (a conversion to muscle specific nuclei) in an autocrine-paracrine manner, although it induces differentiation to a much greater degree. This is in agreement with the Dual Effector theory. In fact, you can inject a muscle with IGF-1 and it will grow! Studies have shown that , when injected locally, IGF-1 increases satellite cell activity, muscle DNA content, muscle protein content, muscle weight and muscle cross sectional area (Adams,1998).
On the very cutting edge of research scientists are now discovering the signaling pathway by which mechanical stimulation and IGF-1 activity leads to all of the above changes in satellite cells, muscle DNA content, muscle protein content, muscle weight and muscle cross sectional area just outlined above. This research is stemming from studies done to explain cardiac hypertrophy. It involves a muscle enzyme called calcineurin which is a phosphatase enzyme activated by high intracellular calcium ion concentrations (Dunn, 1999). Note that overloaded muscle is characterized by chronically elevated intracellular calcium ion concentrations. Other recent research has demonstrated that IGF-1 increases intracellular calcium ion concentrations leading to the activation of the signaling pathway, and subsequent muscle fiber hypertrophy (Semsarian, 1999; Musaro, 1999). I am by no means a geneticist so I hesitated even bringing this new research up. In summary the researchers involved in these studies have explained it this way, IGF-1 as well as activated calcineurin, induces expression of the transcription factor GATA-2, which accumulates in a subset of myocyte nuclei, where it associates with calcineurin and a specific dephosphorylated isoform of the transcription factor nuclear factor of activated T cells or NF-ATc1. Thus, IGF-1 induces calcineurin-mediated signaling and activation of GATA-2, a marker of skeletal muscle hypertrophy, which cooperates with selected NF-ATc isoforms to activate gene expression programs leading to increased contractile protein synthesis and muscle hypertrophy. Did you get all that?
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From Scorpio @ MC - (kinda shows something bout the strength)IGF-1 Once Again Proves to be One of the Most Powerful Mediators of Muscle Growth-by Bryan Haycock, MS, CSCS
Viral mediated expression of insulin-like growth factor I blocks the aging-related loss of skeletal muscle function
Researchers:
Elisabeth R. Barton-Davis*, Daria I. Shoturma*, Antonio Musaro, Nadia Rosenthal, and H. Lee Sweeney*,
* Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia, PA and Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
Source:
Proc Natl Acad Sci U S A 1998 Dec 22;95(26):15603-7
Summary:
Although the mechanisms underlying age associated muscle loss are not entirely understood, researchers attempted to moderate the loss by increasing the regenerative capacity of muscle. This involved the injection of a recombinant adeno-associated virus directing overexpression of insulin-like growth factor I (IGF-I) in differentiated muscle fibers.

They demonstrated that the IGF-I expression promotes an average increase of 15% in muscle mass and a 14% increase in strength in young adult mice (Figure 1), and remarkably, prevents aging-related muscle changes in old adult mice, resulting in a 27% increase in strength as compared with uninjected old muscles (Figure 2). Muscle mass and fiber type distributions were maintained at levels similar to those in young adults. These results suggest that gene transfer of IGF-I into muscle could form the basis of a human gene therapy for preventing the loss of muscle function associated with aging and may be of benefit in diseases where the rate of damage to skeletal muscle is accelerated.

Discussion:
I’m not sure where to begin. This study has the potential to completely change the way we age.
In this experiment, a recombinant adeno-associated virus, directing overexpression of insulin-like growth factor I (IGF-I) in mature muscle fibers, was injected into the muscles of mice. The DNA that was originally in the virus was removed along with markers that stimulate immune response. DNA coding for IGF-1 was then put into the virus along with a promoter gene to ensure high rates of transcription. The results, as you can see by figures 1 & 2, were dramatic.
IGF-1 plays a crucial role in muscle regeneration. IGF-1 stimulates both proliferation and differentiation of stem cells in an autocrine-paracrine manner, although it induces differentiation to a much greater degree. IGF-1, when injected locally, increases satellite cell activity, muscle DNA, muscle protein content, muscle weight and muscle cross sectional area. The importance of IGF-1 lies in the fact that all of its apparent functions act to induce muscle growth with or without overload although it really shines as a growth promoter when combined with physical loading of the muscle.
IGF-1 also acts as an endocrine growth factor having an anabolic effect on distant tissues once released into the blood stream by the liver. IGF-1 possesses the insulin-like property of inhibiting degradation, but in addition can stimulate protein synthesis. The insulin-like effects are probably due to the similarity of the signaling pathways between insulin and IGF-1 following ligand binding at the receptors.
The ability of IGF-I to stimulate protein synthesis resembles the action of GH, which was shown in separate studies on volunteers to stimulate protein synthesis without affecting protein degradation. Although it is often believed that the effects of GH are mediated through IGF-1, this cannot be the case entirely. First, the effects of the two hormones are different, in that GH does not change protein degradation. Second, the effect of GH is observed with little or no change in systemic IGF-1 concentrations. Age related muscle loss has been prevented with GH injections, however it is believed that this is accomplished through IGF-1.
The results of this study are similar to other studies where IGF-1 was injected directly into muscle tissue, resulting in increases in size and strength of experimental animals. Using a virus as a genetic vehicle has an advantage over simply injecting the growth factor. The effects of a single viral treatment last significantly longer (months if not years) because the muscle cell itself is constantly overproducing its own IGF-1 from injected DNA.
The fact that the IGF-1 produced by the muscle of these mice did not reach the blood stream is interesting. Systemic injections of IGF-1 have not been successful in inducing this kind of anabolic effect in humans. In addition, IGF-1 produced by the liver is genetically different than that produced by muscle tissue. It could be that providing additional DNA for the muscle to produce it’s own IGF-1 is the key to achieving anabolic and rejuvenative effects specifically in skeletal muscle.
In this study there was a preferential preservation of type IIb muscle fibers in aging mice. These are the fibers most sensitive to muscle hypertrophy from training and they are also the first fibers to disappear with aging. In the mice receiving the engineered virus, there was also a preservation of the motor neuron, leading to an increase in functional capacity. It is speculated that age related muscle loss is secondary to the loss of neuronal activation of type-II fibers. By preventing the degeneration of typ-II motor units, functional capacity could be maintained into old age. This technique may also serve useful in the prevention of osteoporosis. Further study is necessary to determine wether IGF-1 is having an effect only on muscle fibers or on nervous tissues as well.
Finally, it was also exciting to see muscle growth in the young mice who received the injection (15% increase in muscle mass). This means that the injection provided levels of IGF-1 far and above what the muscle normally has access to and not simply a preservation of normal levels. Remember that this was not combined with exercise. The growth of the injected muscles happened even without an extreme mechanical stimulus. The mice were simply allowed to run around as they usually do. Because of these dramatic results, the authors expressed concern about the use of this technique to enhance performance or cosmetic appearance. Research Update is not my personal soap box so I won’t go off on the gender centered hypocrisy of cosmetic enhancement in our society. All we can hope for is that this technique will be used to treat more important diseases such as muscular dystrophy and thereby become somewhat available for other uses as well.
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From Dr JMW @ AS (info +personal expeirinece)
· Long™R3IGF-I is an analog of human IGF-I.
· It is a superior alternative to insulin in serum-free media.
· It increases protein production by cells in culture medium.
· It increases cell viability by inhibiting apoptosis.
· It has a longer half-life in cell culture than insulin.
· It is readily available.
· There is secure and ample manufacturing capacity at GroPep Limited.
· No animal- or human- derived material is used in the manufacture or storage of Long™R3IGF-I.
· Long™R3IGF-I is already being used in the manufacture of three (3) biopharmaceuticals approved by FDA and EMEA.
Frequently Asked Questions
What cell types will respond to Long™R3IGF-I?
All cells that have a Type I IGF receptor will potentially respond. Most commercially used cells including CHO, fibroblasts and hybridomas have a type I IGF receptor. All cells which respond to pharmacological concentrations of insulin (>1 mg/liter) will respond to Long™R3IGF-I (10-50 mg/liter).
Is storage of the stock solution at 4°C acceptable?
Yes
How long is the stock solution stable for under these storage conditions?
Liquid stability data shows that Long™R3IGF-I is stable for 3 years (-20°C to 37°C). Therefore, the stock solution should be stable at 4°C for 3 years.
What type of preparation is available?
Liquid formulation, preferable for GMP production.
Freeze dried preparation.
Is Long™R3IGF-I stable?
Re-test date for freeze-dried peptide is 3 years. Liquid formulation stability studies have recently been completed. It is stable for 3 years (-20°C to +37°C). We have data indicating stability in media at 4°C for 1 year.

Here is an article written by a self-experimenter.
December 15, 2000
Answer: What a perfect question! You actually have talked to just the right person. I have a business associate that worked for the company that produces this in Australia. Several years ago, I ordered 10mg of Long R3 IGF-1 and used it for several months. What I found out was truly amazing.

Before I tell you about my results, let me tell you that if you are going to use IGF-1 then make sure it is the Long R3 version! Let me explain. Regular IGF-1 like what is produced in your body is transported around connected to binding proteins. There are quite a few of these and their main purpose is to grab ahold of the IGF-1 peptide and keep it from being quickly degraded. Without these binding proteins, all of the IGF-1 would be metabolized in the body within a few minutes. The problem (at least it seems like a problem but might actually be a good thing) is that these binding proteins basically prevent the IGF-1 from performing its function. As long as IGF-1 is attached to the binding protein it cannot do the cool stuff that it wants to do. Regular IGF-1 must be released from its binding protein in order to accomplish its mission. Part of the problem is that much of the IGF-1 is degraded before it is released (seems like much is wasted doesn’t it?)
With Long R3 IGF-1 this problem doesn’t exist. Understand that the Long R3 version does not bind to the various binding proteins. It is free to move throughout your body and immediately start doing all the cool stuff that it wants to do. Again, understand that the Long R3 version is several orders of magnitude stronger than regular IGF-1.
If you would happen to use regular IGF-1, you would need several milligrams per day in order to get the desired effect. With the Long R3 version, you need only microgram quantities. Long R3 is also inherently MUCH cheaper to produce. What I am saying is that for the average person, regular IGF-1 is not practical-it is too expensive and you need to use too much. With Long R3 IGF-1, the price to results ratio is pretty good!

Something else I want to explain is how I went about preparing it for injection into my body. Unfortunately, this is not easy and the average person will have a hard time doing it. At the time, I worked in a sophisticated lab which had all of the necessary equipment. I ordered 10mg of Long R3 IGF-1 and it came in a single flip-top vial. 10mg might not seem like much but believe me, when it comes to Long R3 IGF-1, it is a ton! Some people might say to just add saline to the vial, keep it in the fridge and inject it when necessary. However, this will not work well because the IGF-1 is not highly stable and will degrade in an aqueous environment. 10mg was enough for many months and I needed a way that would allow the IGF-1 to remain potent during this entire time. I did my research and developed my method. I ordered what is known as microvials and sterilized them. I then diluted the IGF-1 with sterile water and added just a tad of acid to increase stability. Although it took quite a while, I then used a micropipette and alliquotted an amount of solution that contained 50mcg into one of my microvials. I closed the microvial and then froze it in a deep freezer. When I was ready to inject, I took out one or more of my microvials, thawed it out, combined it with saline and injected it.
When I first started taking Long R3 IGF-1, I used 50mcg every other day. Amazingly, within days, I started noticing some effects in my body. I felt super hungry all of the time and just felt “anabolic”. I can’t describe this feeling except to say that it was very similar to being on anabolic steroids (I wasn’t on at the time). Within one month, I gained almost 17 pounds of fairly lean mass! After the first month, something happened though and I noticed that it didn’t seem to be working that well. I upped the dosage several times over the next month to keep up the desired effects. On the third month, I was using several hundred micrograms per day but wasn’t noticing any further gains. All in all, I gained about 20 pounds of pretty solid mass!
Please notice that almost all of my gains were within the first month of taking the Long R3 IGF-1. After this first month, my gains slowed down considerably and eventually stopped altogether even though I was taking high dosages. Why did this happen?

From all of my research.......I suppose one of two things might have happened to prevent me from making further gains. What I truly suspect is that the Long R3 IGF-1 downregulated the amount of binding proteins being produced by my body (research confirms this). When I first started to inject the IGF-1, I was supplementing my own body’s IGF-1. I not only had my own IGF-1 working throughout the day but I had the potent surges of Long R3 IGF-1 that I would inject. Over time though, the binding proteins were downregulated. Of course my body continued to produce some (albeit less) IGF-1, however, because there were very little or no binding proteins it was quickly degraded. From what I can tell, I was in a state where 95% of the day my body did not have the benefits of IGF-1. Basically, it got what it got when I injected the Long R3 version.
The other possibility is that I built up antibodies to the Long R3 IGF-1 which basically sought out and destroyed what I injected. Although possible, I don’t believe this actually happened because it is not supported by research. I have seen no evidence which suggests that Long R3 IGF-1 causes antibody production.
To fix the above problem, one would have to cycle the Long R3 IGF-1. The best thing would probably be to take it every other month. This would allow your own body’s IGF-1 and binding proteins to return to normal.

Overall....I had a good experience with Long R3 IGF-1. The results were different than with steroids. I have noticed that steroids cause preferential growth of certain muscles, especially those that are stressed (as in lifting). The IGF-1 though seemed to cause my entire body to get a little thicker. I guess IGF-1 is less compensatory in nature and exerts a more whole-body anabolicity.
Would I recommend IGF-1? To the right person who is very careful and knows what he’s doing and has a good background in the sciences and has access to a good lab, YES! However, you can tell that I have listed many prerequisites to using it. For the average Joe, I believe is is just too complicated to be safe.

----------------------------------------------------------------------

From Dr JMW @ AS (info +personal expeirinece)
· Long™R3IGF-I is an analog of human IGF-I.
· It is a superior alternative to insulin in serum-free media.
· It increases protein production by cells in culture medium.
· It increases cell viability by inhibiting apoptosis.
· It has a longer half-life in cell culture than insulin.
· It is readily available.
· There is secure and ample manufacturing capacity at GroPep Limited.
· No animal- or human- derived material is used in the manufacture or storage of Long™R3IGF-I.
· Long™R3IGF-I is already being used in the manufacture of three (3) biopharmaceuticals approved by FDA and EMEA.
Frequently Asked Questions
What cell types will respond to Long™R3IGF-I?
All cells that have a Type I IGF receptor will potentially respond. Most commercially used cells including CHO, fibroblasts and hybridomas have a type I IGF receptor. All cells which respond to pharmacological concentrations of insulin (>1 mg/liter) will respond to Long™R3IGF-I (10-50 mg/liter).
Is storage of the stock solution at 4°C acceptable?
Yes
How long is the stock solution stable for under these storage conditions?
Liquid stability data shows that Long™R3IGF-I is stable for 3 years (-20°C to 37°C). Therefore, the stock solution should be stable at 4°C for 3 years.
What type of preparation is available?
Liquid formulation, preferable for GMP production.
Freeze dried preparation.
Is Long™R3IGF-I stable?
Re-test date for freeze-dried peptide is 3 years. Liquid formulation stability studies have recently been completed. It is stable for 3 years (-20°C to +37°C). We have data indicating stability in media at 4°C for 1 year.

Here is an article written by a self-experimenter.
December 15, 2000
Answer: What a perfect question! You actually have talked to just the right person. I have a business associate that worked for the company that produces this in Australia. Several years ago, I ordered 10mg of Long R3 IGF-1 and used it for several months. What I found out was truly amazing.

Before I tell you about my results, let me tell you that if you are going to use IGF-1 then make sure it is the Long R3 version! Let me explain. Regular IGF-1 like what is produced in your body is transported around connected to binding proteins. There are quite a few of these and their main purpose is to grab ahold of the IGF-1 peptide and keep it from being quickly degraded. Without these binding proteins, all of the IGF-1 would be metabolized in the body within a few minutes. The problem (at least it seems like a problem but might actually be a good thing) is that these binding proteins basically prevent the IGF-1 from performing its function. As long as IGF-1 is attached to the binding protein it cannot do the cool stuff that it wants to do. Regular IGF-1 must be released from its binding protein in order to accomplish its mission. Part of the problem is that much of the IGF-1 is degraded before it is released (seems like much is wasted doesn’t it?)
With Long R3 IGF-1 this problem doesn’t exist. Understand that the Long R3 version does not bind to the various binding proteins. It is free to move throughout your body and immediately start doing all the cool stuff that it wants to do. Again, understand that the Long R3 version is several orders of magnitude stronger than regular IGF-1.
If you would happen to use regular IGF-1, you would need several milligrams per day in order to get the desired effect. With the Long R3 version, you need only microgram quantities. Long R3 is also inherently MUCH cheaper to produce. What I am saying is that for the average person, regular IGF-1 is not practical-it is too expensive and you need to use too much. With Long R3 IGF-1, the price to results ratio is pretty good!

Something else I want to explain is how I went about preparing it for injection into my body. Unfortunately, this is not easy and the average person will have a hard time doing it. At the time, I worked in a sophisticated lab which had all of the necessary equipment. I ordered 10mg of Long R3 IGF-1 and it came in a single flip-top vial. 10mg might not seem like much but believe me, when it comes to Long R3 IGF-1, it is a ton! Some people might say to just add saline to the vial, keep it in the fridge and inject it when necessary. However, this will not work well because the IGF-1 is not highly stable and will degrade in an aqueous environment. 10mg was enough for many months and I needed a way that would allow the IGF-1 to remain potent during this entire time. I did my research and developed my method. I ordered what is known as microvials and sterilized them. I then diluted the IGF-1 with sterile water and added just a tad of acid to increase stability. Although it took quite a while, I then used a micropipette and alliquotted an amount of solution that contained 50mcg into one of my microvials. I closed the microvial and then froze it in a deep freezer. When I was ready to inject, I took out one or more of my microvials, thawed it out, combined it with saline and injected it.
When I first started taking Long R3 IGF-1, I used 50mcg every other day. Amazingly, within days, I started noticing some effects in my body. I felt super hungry all of the time and just felt “anabolic”. I can’t describe this feeling except to say that it was very similar to being on anabolic steroids (I wasn’t on at the time). Within one month, I gained almost 17 pounds of fairly lean mass! After the first month, something happened though and I noticed that it didn’t seem to be working that well. I upped the dosage several times over the next month to keep up the desired effects. On the third month, I was using several hundred micrograms per day but wasn’t noticing any further gains. All in all, I gained about 20 pounds of pretty solid mass!
Please notice that almost all of my gains were within the first month of taking the Long R3 IGF-1. After this first month, my gains slowed down considerably and eventually stopped altogether even though I was taking high dosages. Why did this happen?

From all of my research.......I suppose one of two things might have happened to prevent me from making further gains. What I truly suspect is that the Long R3 IGF-1 downregulated the amount of binding proteins being produced by my body (research confirms this). When I first started to inject the IGF-1, I was supplementing my own body’s IGF-1. I not only had my own IGF-1 working throughout the day but I had the potent surges of Long R3 IGF-1 that I would inject. Over time though, the binding proteins were downregulated. Of course my body continued to produce some (albeit less) IGF-1, however, because there were very little or no binding proteins it was quickly degraded. From what I can tell, I was in a state where 95% of the day my body did not have the benefits of IGF-1. Basically, it got what it got when I injected the Long R3 version.
The other possibility is that I built up antibodies to the Long R3 IGF-1 which basically sought out and destroyed what I injected. Although possible, I don’t believe this actually happened because it is not supported by research. I have seen no evidence which suggests that Long R3 IGF-1 causes antibody production.
To fix the above problem, one would have to cycle the Long R3 IGF-1. The best thing would probably be to take it every other month. This would allow your own body’s IGF-1 and binding proteins to return to normal.

Overall....I had a good experience with Long R3 IGF-1. The results were different than with steroids. I have noticed that steroids cause preferential growth of certain muscles, especially those that are stressed (as in lifting). The IGF-1 though seemed to cause my entire body to get a little thicker. I guess IGF-1 is less compensatory in nature and exerts a more whole-body anabolicity.
Would I recommend IGF-1? To the right person who is very careful and knows what he’s doing and has a good background in the sciences and has access to a good lab, YES! However, you can tell that I have listed many prerequisites to using it. For the average Joe, I believe is is just too complicated to be safe.
-----------------------------------------------------------------------------------
Conversion From LA @ MC
I do IM injects but to prepare it here's an easy way.
It comes in 1000mcg per ml.
Take 2 ml of of bacteriostatic water water an add it to the vial it came with. Now you have 1000mcg per 3 ml.
Take 2 slin pins and fill them from the vial. Each pin holds 1ml. Freeze these pins. Each pin will have 333mcg in them and there will be 333mcg left in vial.
Add 2 more ml of of bacteriostatic water to what's remaining in the vial. This gives you 333mcg in 3 ml or approx 100mcg per ml. Now you can use a slin pin to measure out the amount. 30mcg would be 30 on a slin pin, 40 would be 40 and so on.
When you run out, take one of the frozen pins and add it to an empty vial. Add 2 ml of of bacteriostatic water and you have the same solution as before (333mcg in 3 ml or approx 100mcg per ml).
I do mine 5on/2off at 30mcg for 4 weeks. So I end going through 2/3 of a 1000mcg a cycle. So for every 2000mg purchased I get 3 cycles worth.

------------------------------------------------------

IGF-1 R3



IGF1 stands for insulin like growth factor. It mimics insulin in the human body

and also at the same time makes the muscles more sensitive to insulin’s effects.

It is a growth factor and is the most potent one in the human body at that. IGF

causes muscle cell hyperplasia, which is an actual splitting and forming of new

muscle cells. This was thought to only be possible during puberty. IGF is much

more potent at this effect than growth hormone is, in fact almost all of the

effects you see from growth hormone come from the increased amount of IGF that

your liver produces when the GH is destroyed. So it would be very easy to say

that IGF is a much more potent and cheaper alternative to GH use, although GH is

more effective for fat loss than IGF due to some other effects that it causes

such as metabolism increase and the ability to effectively use more insulin, T3,

and anabolic steroids.

Another advantage that IGF has over GH is that it has much more of an affinity

to attach to muscle cells instead of bone and organ cells. Growth hormone has

been know to cause a lot of organ enlargement and bone elongation since it

attaches to all types of receptor cells. IGF is much more likely to go where we

want it, our muscle cells. IGF-1 attaches to myogenic stem cells which are only

located in muscle and connective tissues. These myogenic stem cells are

responsible for the production of myoblast cells which in turn are responsible

for the buildup and repair of connective tissues (ligaments, tendons, cartilage,

and joints to a certain extent).

So from this you can see that IGF-1 is great for increasing the strength of

tendons and also for helping to heal existing injuries while at the same time

helping to prevent them. IGF-1 is also responsible for increased protein

synthesis and amino acid synthesis.

IGF does not have to be used along with anabolic steroids, GH, insulin, or

thyroid hormones to be effective. It causes muscle growth on its own. In fact

some people prefer to use it during their breaks from steroid cycles since IGF

has no effect on natural test production. It could effectively be used along

with HCG, clomid, and PGF2a for a hell of an off cycle stack which would allow

your body to return to normal and still allow you to grow!! On its own IGF will

give an increase of around 2 lbs. of new solid lean muscle tissue every two

weeks, and is also is know for its ability to strip off body fat and GREATLY

increase vascularity, body fat decreases of 5-8% over a 50 day cycle are not

uncommon. But, of course you will be much happier with the results if you use

the IGF along with anabolic steroids, testosterone, and insulin.

The use of steroids along with the IGF allow you to quickly mature and

strengthen the new muscle tissue that the IGF has formed, and may also speed the

process of hyperplasia. If you need any help setting up a great stack to
use along with the IGF just let me know and I can help you out. I speak with

lots of top bodybuilders and guru’s so I am very knowledgeable.

The dosage issue for IGF is where the most controversy lies. Dosages used by

competitive athletes most commonly range anywhere between 60mcg/day to

100+mcg/day. The trick is finding the dosage that works best for YOU. For most

the best results appear when you reach a dosage of 80mcg/day, while some do
receive good results from only 40mcg/day. I personally feel the best results

begin to be noticed at a dosage of 100mcg/day. I personally am using 150mcg/day

during my current cycle.

Also I should let you know that the form of IGF is the Long R3 analog. It has

been chemically altered and has a longer half-life than regular IGF, which only

lasts about 10 minutes in the human body once injected. The Long R3 IGF-1 has a

half-life of 6-10 hours, so you will only need to inject once or twice per day.

The best time to inject is after lifting and in the morning, so it would be best

to use half the dosage in the morning and the other half after lifting. This

will take maximal advantage of IGF’s insulin
mimicking effects.

As posted by: WarLobo

----------------------------------------------------------------

From Scorpio @ MC -
IGF-1: How does it work?

To understand how IGF-1 works you have to understand how muscles grow. The

ability of muscle tissue to constantly regenerate in response to activity makes

it unique. It’s ability to respond to physical/mechanical stimuli depends

greatly on what are called satellite cells. Satellite cells are muscle precursor

cells. You might think of them as "pro-muscle" cells. They are cells that reside

on and around muscle cells. These cells sit dormant until called upon by growth

factors such as IGF-1. Once this happens these cells divide and genetically

change into cells that have nuclei identical to those of muscle cells. These new

satellite cells with muscle nuclei are critical if not mandatory to muscle

growth.

Without the ability to increase the number of nuclei, a muscle cell will not

grow larger and its ability to repair itself is limited. The explanation for

this is quite simple. The nucleus of the cell is where all of the blue prints

for new muscle come from. The larger the muscle, the more nuclei you need to

maintain it. In fact there is a "nuclear to volume" ratio that cannot be

overridden. Whenever a muscle grows in response to functional overload there is

a positive correlation between the increase in the number of myonuclei and the

increase in fiber cross sectional area (CSA). When satellite cells are

prohibited from donating new nuclei, overloaded muscle will not grow

(Rosenblatt,1992 & 1994; Phelan,1997). So you see, one important key to

unnatural muscle growth is the activation of satellite cells by growth factors

such as IGF-1.

IGF-1 stimulates both proliferation (an increase in cell number) and

differentiation (a conversion to muscle specific nuclei) in an

autocrine-paracrine manner, although it induces differentiation to a much

greater degree. This is in agreement with the Dual Effector theory. In fact, you

can inject a muscle with IGF-1 and it will grow! Studies have shown that , when

injected locally, IGF-1 increases satellite cell activity, muscle DNA content,

muscle protein content, muscle weight and muscle cross sectional area

(Adams,1998).
On the very cutting edge of research scientists are now discovering the

signaling pathway by which mechanical stimulation and IGF-1 activity leads to

all of the above changes in satellite cells, muscle DNA content, muscle protein

content, muscle weight and muscle cross sectional area just outlined above. This

research is stemming from studies done to explain cardiac hypertrophy. It

involves a muscle enzyme called calcineurin which is a phosphatase enzyme

activated by high intracellular calcium ion concentrations (Dunn, 1999). Note

that overloaded muscle is characterized by chronically elevated intracellular

calcium ion concentrations. Other recent research has demonstrated that IGF-1

increases intracellular calcium ion concentrations leading to the activation of

the signaling pathway, and subsequent muscle fiber hypertrophy (Semsarian, 1999;

Musaro, 1999). I am by no means a geneticist so I hesitated even bringing this

new research up. In summary the researchers involved in these studies have

explained it this way, IGF-1 as well as activated calcineurin, induces

expression of the transcription factor GATA-2, which accumulates in a subset of

myocyte nuclei, where it associates with calcineurin and a specific

dephosphorylated isoform of the transcription factor nuclear factor of activated

T cells or NF-ATc1. Thus, IGF-1 induces calcineurin-mediated signaling and

activation of GATA-2, a marker of skeletal muscle hypertrophy, which cooperates

with selected NF-ATc isoforms to activate gene expression programs leading to

increased contractile protein synthesis and muscle hypertrophy. Did you get all

that?
--------------------------------------------------------------------------------

----
From Scorpio @ MC - (kinda shows something bout the strength)IGF-1 Once Again

Proves to be One of the Most Powerful Mediators of Muscle Growth-by Bryan

Haycock, MS, CSCS
Viral mediated expression of insulin-like growth factor I blocks the

aging-related loss of skeletal muscle function
Researchers:
Elisabeth R. Barton-Davis*, Daria I. Shoturma*, Antonio Musaro, Nadia Rosenthal,

and H. Lee Sweeney*,
* Department of Physiology, University of Pennsylvania School of Medicine,

Philadelphia, PA and Cardiovascular Research Center, Massachusetts General

Hospital, Charlestown, MA
Source:
Proc Natl Acad Sci U S A 1998 Dec 22;95(26):15603-7
Summary:
Although the mechanisms underlying age associated muscle loss are not entirely

understood, researchers attempted to moderate the loss by increasing the

regenerative capacity of muscle. This involved the injection of a recombinant

adeno-associated virus directing overexpression of insulin-like growth factor I

(IGF-I) in differentiated muscle fibers.

They demonstrated that the IGF-I expression promotes an average increase of 15%

in muscle mass and a 14% increase in strength in young adult mice (Figure 1),

and remarkably, prevents aging-related muscle changes in old adult mice,

resulting in a 27% increase in strength as compared with uninjected old muscles

(Figure 2). Muscle mass and fiber type distributions were maintained at levels

similar to those in young adults. These results suggest that gene transfer of

IGF-I into muscle could form the basis of a human gene therapy for preventing

the loss of muscle function associated with aging and may be of benefit in

diseases where the rate of damage to skeletal muscle is accelerated.

Discussion:
I’m not sure where to begin. This study has the potential to completely change

the way we age.
In this experiment, a recombinant adeno-associated virus, directing

overexpression of insulin-like growth factor I (IGF-I) in mature muscle fibers,

was injected into the muscles of mice. The DNA that was originally in the virus

was removed along with markers that stimulate immune response. DNA coding for

IGF-1 was then put into the virus along with a promoter gene to ensure high

rates of transcription. The results, as you can see by figures 1 & 2, were

dramatic.
IGF-1 plays a crucial role in muscle regeneration. IGF-1 stimulates both

proliferation and differentiation of stem cells in an autocrine-paracrine

manner, although it induces differentiation to a much greater degree. IGF-1,

when injected locally, increases satellite cell activity, muscle DNA, muscle

protein content, muscle weight and muscle cross sectional area. The importance

of IGF-1 lies in the fact that all of its apparent functions act to induce

muscle growth with or without overload although it really shines as a growth

promoter when combined with physical loading of the muscle.
IGF-1 also acts as an endocrine growth factor having an anabolic effect on

distant tissues once released into the blood stream by the liver. IGF-1

possesses the insulin-like property of inhibiting degradation, but in addition

can stimulate protein synthesis. The insulin-like effects are probably due to

the similarity of the signaling pathways between insulin and IGF-1 following

ligand binding at the receptors.
The ability of IGF-I to stimulate protein synthesis resembles the action of GH,

which was shown in separate studies on volunteers to stimulate protein synthesis

without affecting protein degradation. Although it is often believed that the

effects of GH are mediated through IGF-1, this cannot be the case entirely.

First, the effects of the two hormones are different, in that GH does not change

protein degradation. Second, the effect of GH is observed with little or no

change in systemic IGF-1 concentrations. Age related muscle loss has been

prevented with GH injections, however it is believed that this is accomplished

through IGF-1.
The results of this study are similar to other studies where IGF-1 was injected

directly into muscle tissue, resulting in increases in size and strength of

experimental animals. Using a virus as a genetic vehicle has an advantage over

simply injecting the growth factor. The effects of a single viral treatment last

significantly longer (months if not years) because the muscle cell itself is

constantly overproducing its own IGF-1 from injected DNA.
The fact that the IGF-1 produced by the muscle of these mice did not reach the

blood stream is interesting. Systemic injections of IGF-1 have not been

successful in inducing this kind of anabolic effect in humans. In addition,

IGF-1 produced by the liver is genetically different than that produced by

muscle tissue. It could be that providing additional DNA for the muscle to

produce it’s own IGF-1 is the key to achieving anabolic and rejuvenative effects

specifically in skeletal muscle.
In this study there was a preferential preservation of type IIb muscle fibers in

aging mice. These are the fibers most sensitive to muscle hypertrophy from

training and they are also the first fibers to disappear with aging. In the mice

receiving the engineered virus, there was also a preservation of the motor

neuron, leading to an increase in functional capacity. It is speculated that age

related muscle loss is secondary to the loss of neuronal activation of type-II

fibers. By preventing the degeneration of typ-II motor units, functional

capacity could be maintained into old age. This technique may also serve useful

in the prevention of osteoporosis. Further study is necessary to determine

wether IGF-1 is having an effect only on muscle fibers or on nervous tissues as

well.
Finally, it was also exciting to see muscle growth in the young mice who

received the injection (15% increase in muscle mass). This means that the

injection provided levels of IGF-1 far and above what the muscle normally has

access to and not simply a preservation of normal levels. Remember that this was

not combined with exercise. The growth of the injected muscles happened even

without an extreme mechanical stimulus. The mice were simply allowed to run

around as they usually do. Because of these dramatic results, the authors

expressed concern about the use of this technique to enhance performance or

cosmetic appearance. Research Update is not my personal soap box so I won’t go

off on the gender centered hypocrisy of cosmetic enhancement in our society. All

we can hope for is that this technique will be used to treat more important

diseases such as muscular dystrophy and thereby become somewhat available for

other uses as well.

-------------------------------------------------------------
 
copy and paste info again and again and again...
blah blah blah..

for hardcore user information from members who have personal experience using IGF-1 go to: www.getIGF.com
 
NYBodyguard said:
u said Any form of IGF is ONLY supplied in a lyphosized form so are u saying OmegL is bullshit?

I have 2 pals taking omega and they are having a high old time with it. Getting very good results. They have both been taking it as a part of their PCT and have actually increased their weight. I will be running it in a little over 1 month as part of my pct. I'll post updates on it.
 
NYBodyguard said:
u said Any form of IGF is ONLY supplied in a lyphosized form so are u saying OmegL is bullshit?

no bro OmegL isn't bullshit some of the information was from 2003 so it is a little outdated. but its all good reading information if you want to use IGF and know what your using.
 
IMO, from what I can tell, IGF-1 should be mixed with acetic acid not BA. I am not saying that folks that sell IGF-1 premixed are not selling good stuff but I personally would not buy it premixed because you can not really be sure what you are getting and if it was mixed under the right conditions, and not to mention it begins to degrade after mixing. I would rather reconstitute the powder myself.

Just my 2 cent.
Perp
 
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