PubMed
Mechano growth factor E peptide (MGF-E), a muscle-specific splice variant of IGF-1
Yang et al., 2004
Healing & RecoveryResearch OnlyD
PEG-MGF
PEGylated Mechano Growth Factor
PEG-MGF (PEGylated mechano growth factor) is a polyethylene glycol-modified variant of the IGF-1 splice variant mechano growth factor (MGF), a local isoform of IGF-1 produced in muscles in response to mechanical loading or injury. PEGylation extends the half-life from minutes to approximately 5 days. Research demonstrates activation of muscle satellite cells and promotion of muscle hypertrophy and repair. Research only.
Observational report only — live community data. Not medical advice. Does not recommend doses, protocols, or treatments.
- Studies cited
- 2
- Research grade
- D
- Experience
- 99
- Activity
- 80
Overall check-ins
Trackers & reports
Overview
About PEG-MGF
PEG-MGF (PEGylated mechano growth factor) is a polyethylene glycol-modified variant of the IGF-1 splice variant mechano growth factor (MGF), a local isoform of IGF-1 produced in muscles in response to mechanical loading or injury. PEGylation extends the half-life from minutes to approximately 5 days. Research demonstrates activation of muscle satellite cells and promotion of muscle hypertrophy and repair. Research only.
- Category
- Healing & Recovery
- Regulatory status
- Research Only
- Also known as
- PEGylated Mechano Growth Factor
- Self-reports
- 25
Community
What 25 users report
25 community reports
Overall experience
From check-in ratings — separate from side effects logged below. Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Favorable 97% · Mixed 3% · Unfavorable overall 0%
Most reported benefits
Benefits users selected when logging a favorable or mixed check-in.
Recovery
181
Most logged side effects
Side effects are logged separately from overall experience. A favorable check-in can still include nausea, fatigue, or injection-site reactions.
Injection site irritation
5
Self-reported dose per injection
Median bucket: 200–400 mcg · Most common: 200–400 mcg
Reports span 200–600 mcg
200–400
123
400–600
58
Anonymized self-reports from PeptIQ users — not prescribing guidance. Buckets group similar logged amounts; open-ended top buckets mean “at least” that dose.
Commonly stacked with
How repeat users are trending
Among repeat reporters, 87% said they felt similar to their last entry, 13% more positive, and 0% more negative.
Overall, repeat reporters leaned more positive than their previous entry.
Median gap between entries: 185 days · Based on 23 repeat reporters
Research
Cited research (1)
Source
Tools
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Frequently asked
What do PeptIQ users report about PEG-MGF?
This page summarizes 25 anonymized self-reports from PeptIQ users who track PEG-MGF, including commonly reported effects and co-tracked peptides. These are observational patterns, not clinical outcomes.
How do side effects relate to overall experience for PEG-MGF?
PeptIQ separates overall check-in ratings (favorable, mixed, or unfavorable) from logged side effects like nausea or fatigue. Users often report benefits and side effects in the same check-in — a high experience score does not mean zero side effects were noted.
What research is cited for PEG-MGF?
1 sources are linked on this page, including PubMed articles, clinical trial registries, and FDA labels where applicable. Citations describe published research — not recommendations.
Is PEG-MGF safe to use?
This wiki does not assess safety or recommend use. PEG-MGF is listed as Research Only. Consult a licensed clinician for personal medical decisions.
What are the purported benefits and uses of PEG-MGF?
This wiki summarizes observational community reports and linked citations for PEG-MGF. It does not assert therapeutic benefits. See the cited research list on this page and the educational profile for PEG-MGF for study-level context — not medical advice.
What is the legal status of PEG-MGF?
PEG-MGF is listed in PeptIQ as Research Only. Regulatory status varies by jurisdiction and can change. This wiki does not provide legal advice; check current FDA and local rules and talk with a licensed clinician or counsel for personal decisions.
What are the known or theoretical side effects and risks of PEG-MGF?
Safety data quality for PEG-MGF varies widely by compound and study design. PeptIQ does not establish a risk profile here. Review primary literature, product labeling where applicable, and clinician guidance. Community self-reports are not a substitute for clinical evidence.
What is the current state of research on PEG-MGF?
This page links 1 indexed sources for PEG-MGF. Evidence maturity differs by application — some peptides have large human programs, others are mostly preclinical. Treat citation counts as literature volume, not proof of efficacy.