Growth hormone / secretagogues
MGF (Mechano Growth Factor)
Preclinical (animal)IGF-1Ec splice variant · IGF-1 splice variant
Muscle-repair IGF-1 splice variant studied preclinically.
What it is
A splice variant of IGF-1 expressed in mechanically stressed muscle, implicated in activating muscle stem cells for repair.
How it works
Acts locally to activate satellite (muscle stem) cells and promote muscle repair and growth.
Studied for
Muscle repair/hypertrophy (preclinical).
Regulatory status
Not FDA-approved; research chemical; WADA-prohibited.
Safety
No human safety data; theoretical proliferative concerns.
Educational information only — not medical advice, and not a recommendation to use any compound. Many peptides here are not approved for human use; legal status and evidence quality vary and are noted above. This page contains no dosing information. Consult a qualified clinician before making any health decision.