topics / muscle
Tagged muscle.
- Preliminary human Follistatin 344 A myostatin/activin-pathway antagonist that is biologically real but clinically unproven; its only legitimate human testing was tiny early-phase gene therapy in muscular dystrophy, with no human evidence for muscle-building or weight loss, no regulatory approval, and a permanent WADA ban.
- Animal only IGF-1 LR3 A long-acting synthetic IGF-1 analog with anabolic effects in animals and cell culture, but no human trials for its marketed uses; not FDA-approved and banned in sport.
- Animal only IGF-1 DES A naturally occurring, shorter and more potent variant of IGF-1 with anabolic effects in rodents and cell culture, but no human trials for its marketed uses; not approved anywhere and banned in sport.
- Animal only MGF (Mechano Growth Factor) MGF is a muscle-derived splice variant of IGF-1 with a plausible repair-signaling mechanism, but no human drug trials exist — the evidence is animal and cell-culture only, and it is banned in sport.