Peptide library / Bones & muscles / PEG-MGF
PEG-MGF
A long-acting version of mechano growth factor, studied only in animals.
Full analysis available. PEG-MGF is under FDA compounding review, and we cover it in depth with the committee vote and our Peptide Evidence Index. Read the full PEG-MGF analysis →
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Muscle growth, promotedLab
How it is thought to work
A polyethylene glycol chain slows breakdown of MGF, extending its half-life from minutes to many hours.
What the evidence shows
There are no published human studies. Claims rely on extrapolation from animal and cell data on natural MGF.
Safety and unknowns
Safety in people is unknown.
Regulatory status
Not FDA-approved. See our full PEG-MGF profile.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.