Pegylated Mechano Growth Factor
The Book of Peptides is not a clinic and not your doctor. We do not sell, prescribe, recommend, or personalize any compound, and no grade or ranking here is an endorsement. None of the compounds covered are approved for the uses described here by the U.S. FDA, Australia's Therapeutic Goods Administration (TGA), New Zealand's Medsafe, or the equivalent regulator in most other countries.
Most are sold for laboratory research only, a few are prescription-only drugs, and some are controlled substances or banned in sport. Possessing or administering an unapproved compound outside an authorized setting may be unlawful wherever you live. Nothing here is a recommendation to buy, possess, or self-administer anything. Consult a licensed physician before any decision involving peptide use.
Cross-checked against 50–100 independent sources per claim — the house standard. How this reference is checked
PEG-MGF is a pegylated form of the IGF-1 splice variant E-domain (mechano growth factor); the PEGylation extends the native minutes-long half-life to around 24 hours. Preclinical work suggests it may activate muscle satellite cells and support fiber repair, but there are no human trials, and the commonly cited benefits are extrapolated from rodent and in-vitro data. It remains a popular but entirely unproven bodybuilding research peptide.
The full published spec sheet — dose units, timing, frequency, and cycle length — is included with membership.
The published dose for this compound, shown as reference. Included with membership.
Reference values as published in the research record — not a recommendation, instruction, or dose suggestion for any person. Not medical advice.
The live calculator — enter any vial size, diluent volume, and syringe size to see the draw computed — is included with membership.