Two engineered variants of the same growth-factor system promise bodybuilders an anabolic signal potent enough to override normal growth regulation and a "muscle memory" molecule that reactivates dormant stem cells. The underlying cell biology is real and well-published. What's missing is any completed human trial for either compound's marketed purpose — and the one FDA-approved, correctly-dosed relative of this pathway carries a black-box hypoglycemia warning that grey-market users are self-administering around without the monitoring it was built for.
Peg-Mgf
-
IGF-1 LR3 and PEG-MGF: The Untested Growth Factors