PEG-MGF research: studies, doses and safety

A modified MGF peptide with no human dosing studies and uncertain identity in unregulated vials.

Also called: PEG MGF, PEGylated mechano growth factor, Mechano growth factor pegylated.

IGF-1 splice variants · PEG-conjugated synthetic MGF E-domain peptide.

No direct human study. Listed experiments concern related MGF fragments or PEG carrier systems, not characterized PEG-MGF.

Key studies

MGF fragments, not PEG-MGF: negative replication: MGF fragments did not reproduce the muscle-cell effects reported in earlier work. (source)
MGF in PEG hydrogel after a heart attack: MGF released from hydrogel rods preserved heart function; this was not PEG-MGF. (source)

Related to PEG-MGF

Mechano growth factor (MGF): A muscle-repair peptide idea with mixed lab findings and no human dosing studies.
BPC-157: An experimental repair peptide with mostly animal evidence and a few small human reports.
TB-500: A short piece of thymosin beta-4 with no proven repair benefit in humans.
IGF-1 LR3: An unapproved growth signal with no human trials found.

Sources

503B Bulk Drug Substances List, FDA · FDA · 2026
Bulk Drug Substances Nominated for Use in Compounding Under Section 503A of the Federal Food, Drug, and Cosmetic Act, FDA · FDA · 2026
Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks, FDA · FDA · 2026
Medicines, European Medicines Agency · European Medicines Agency · 2026
Meeting of the Pharmacy Compounding Advisory Committee, FDA · 2026
Peptide products, Therapeutic Goods Administration · TGA · 2026
Pyrogen and Endotoxins Testing: Questions and Answers, FDA · 2026
The 2026 Prohibited List, World Anti-Doping Agency · WADA · 2026
Therapeutic Goods (Poisons Standard—October 2026) Instrument 2026, Australian Government · Australian Government · 2026
Think twice before injecting peptides bought online: unauthorized products can seriously harm you, Health Canada · Health Canada · 2026
Supply unlicensed medicinal products (specials), MHRA · 2025
Using intramuscular injections in people on oral anticoagulants, NHS Specialist Pharmacy Service · NHS Specialist Pharmacy Service · 2023
Q6A Specifications: Test Procedures and Acceptance Criteria for New Drug Substances and New Drug Products: Chemical Substances, FDA · FDA · 2000
Anaphylaxis: MedlinePlus Medical Encyclopedia, MedlinePlus · MedlinePlus
Low Blood Glucose (Hypoglycemia), National Institute of Diabetes and Digestive and Kidney Diseases

Sources checked: 2026-10-18.

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