Pegylated mechano growth factor
PEG-MGF
Cited range Anabolic research analog
What it is
Mechano growth factor is the IGF-1 Ec splice variant expressed after muscle loading. PEG-MGF is a pegylated analog sold to extend that signal. It is not a licensed anabolic drug.
Benefits in plain language
What researchers and reference users usually mean when they talk about this compound. These are study themes and common claims — not a promise that it will do this in you.
- PEGylated mechano growth factor — an IGF-1 splice aimed at local muscle repair after load.
- Bodybuilding lore: inject near trained muscle so repair signals linger.
- PEG stretches half-life. Local irritation and IGF-family sugar effects still apply.
If a branded, FDA-approved product exists, that label is the only dose that is actually authorized. Research-chemical vials are a different object.
Mechanism of action
IGF-axis and satellite-cell stories from exercise physiology. Pegylation changes duration versus native MGF, which is local and short-lived.
Possible side effects / caveats
IGF-family concerns: glucose, edema, and unregulated growth signaling. Quality of gray-market PEG products is a known problem.
Protocol ranges
| Source tier | Amount | Frequency / duration | Notes |
|---|---|---|---|
| Cited range | 200–400 mcg | A few times weekly in secondary sources | Unstandardized |