T4 not T3

[Sergeant]

If t3 is active in the body while t4 is dependant on conversion why do doctors prescribe t4 to thyroid dependant people and not t3?

 

[SCOTTY-TWO-HOTTY]

I'm on T4's for hypothyroidism, just started them a few weeks ago. I was diagnosed with that susequent to a blood test I had post cycle. Apparently the half life of T4 is much longer than T3 so it is much more appropriate to generate "even" levels of the Thyroid hormone(avoiding spikes).

Yes, T4 becomes biologically active through conversion into T3. Its also about 4 times weaker than T3 as well.

Realgains can really school you on this subject. He's been hypothyroid for decades(on T4's) and knows his Endocrinology very well.

Peace,
S.

 

[Billdoe]

If t3 is active in the body while t4 is dependant on conversion why do doctors prescribe t4 to thyroid dependant people and not t3?

I believe that the school of thought is that by supplementing with T4, your body will convert only the portion that it needs as T-3, and no more......

 

[NY Muscle]

If t3 is active in the body while t4 is dependant on conversion why do doctors prescribe t4 to thyroid dependant people and not t3?

i take t4 for hypothyroidism, 150mcg a day...my t4 was low and t3 i think ws normal when i was prescribed t4..i really cant remember...but taking t3 when your body needs t4 is like putting nitrous (NOS) in a car to make it faster when all you needed to do was fix the engine and the speed would come back. (or something like that lol)

 

[pittbull2]

You bros that are hypothyroid ,do you have more sides when your on now that you take synthyroid and do you reduse the amount of synthyroid your taking when you start your cycle? I have been on synthyroid for 10 years and have had more sides when on for what ever reason??? Anyone else?

 

[SCOTTY-TWO-HOTTY]

You bros that are hypothyroid ,do you have more sides when your on now that you take synthyroid and do you reduse the amount of synthyroid your taking when you start your cycle? I have been on synthyroid for 10 years and have had more sides when on for what ever reason??? Anyone else?

Pitbull- What kind of sides did you begin getting after you began T4 supplementation(that steroids DIDN"T give you previously)? I've only been on T4's for a few weeks, so I can't answer your question. However, after reading your post, I've got some concerns now. That's the first I heard of increased sides(from sauce) while on T4's. I've been clean since the end of March, but I'm starting my biggest cycle yet at the end of July. Can you tell me a bit of what you're talking about?