I order not to post sources and break any forum rules, just Google "liquid-s4 sarms research cem" The first link that is NOT a forum is the company that I have been using. Remember, these are research chemicals and not for human consumption.
Final wrap-up on 30 days of SARMs S4 and SERMs Tamoxifen:
SERMs Liquid Tamox worked great at reducing my hereditary man-boobs and made me feel great - powerful & virile. I have personally recommended other friends and family members to use it. It's cheap ($50/mo.) and yielded a positive experience for me.
SARMs S4 appears to be more effective in higher doses. I spent a few weeks on 20mg, moved up to 50mg and finished the last few days at 100mg. At 20mg, (note, these are just totally arbitrary %'s based on my experience) I was 5% stronger, healed faster and had more endurance. At 50mg, I was 10% and at 100mg I didn't feel perceptibly stronger, but healed and bounced back from extreme physical activity amazingly fast. I took 100mg after 140.2 miles of torture and was ready to go back to work the next day. If that's not the fountain of youth, I don't know what is.
If you can afford ($200/mo.) S4, it is absolutely amazing to have it as an endurance training & recovery aid. Simply put, if you want to be 10-15% "better" than you are right now, this will get you there.
I am a bit leaner and have seen some muscle growth, but I am focused on endurance training and large muscle gain is not my goal.
Side effects: Night vision is greatly affected in 50mg and above. At 100mg I have all-day fuzziness - it's not a big deal at all, but it exists. To me it seems as if I am wearing glasses that aren't perfectly clean, that's all. I went 30 days straight, and have read that if you do 5 days on / 2 days off the vision side effect is not a problem.
I will keep a bottle of liquid S4 in my cabinet and take 100mg a few days before and after an endurance event.