Educational content only. Not medical advice, and no doctor-patient relationship is created. Read the medical disclaimer
Peptide · IGF-1 splice variant
MGF & PEG-MGF
Also known as: Mechano growth factor
Splice variants of IGF-1 linked to muscle repair in research.
Tier 3 · Education only
Grade D · Preclinical only
Educational content only, not medical advice. Discussion here does not mean this therapy is prescribed by Youthful Medicine or available to you. Read the medical disclaimer
U.S. regulatory status
Not FDA-approved. Not eligible for compounding.
What it is
Short forms of IGF-1 released by stressed or damaged muscle. PEG-MGF is a longer-lasting synthetic version.
How it is thought to work
In animal studies it may activate satellite cells, the stem cells that repair muscle.
Animations simplify biology for teaching. They are not a claim that this peptide works this way in people.
What the research shows
Animal and cell data only.
Safety and considerations
Unknown in people. Activating the IGF-1 pathway raises theoretical cancer concerns.
Our position
Education only.
Video lesson
AT A GLANCE
Quadrant
Regenerative & Cellular Health
Sub-pillar
Structural Repair
Tier
Tier 3 · Education only
Evidence grade
Grade D · Preclinical only
Last reviewed
Is this right for you?
Only a physician who has evaluated you can answer that. Consultations are with licensed Youthful Medicine providers.
Never use products labeled “research use only” or “not for human use.” Purity, dose and sterility are unverified.