PEG-MGF vs Dermorphin
Side-by-side comparison of key properties, dosing, and research.
Anabolic & IGF
PEG-MGFRecovery & Repair
Dermorphin- Summary
- PEG-MGF (Pegylated Mechano Growth Factor) is a modified form of MGF (Mechano Growth Factor) where polyethylene glycol (PEG) chains have been attached to extend its half-life from minutes to days. Native MGF is released locally in muscle in response to mechanical stress and quickly degrades. PEGylation allows systemic administration with sustained circulation, enabling whole-body muscle repair and anabolic signaling rather than the purely local effect of native MGF.
- Dermorphin is a naturally occurring heptapeptide opioid isolated from the skin of South American phyllomedusine frogs. It is one of the most potent endogenous mu-opioid receptor agonists known, approximately 30-40 times more potent than morphine by weight. Explored for pain management and fatigue modulation.
- Half-Life
- ~3 days (due to PEGylation)
- Estimated 30-60 minutes (longer than endorphins due to D-Ala)
- Admin Route
- SubQ
- Subcutaneous (research), Intrathecal (research), Intranasal (research)
- Research
- —
- —
- Typical Dose
- 200–400 mcg
- Not established for human use; research doses vary widely
- Frequency
- 2–3x per week
- Not established
- Key Benefits
- Extended half-life (~3 days) vs native MGF (minutes)
- Systemic muscle satellite cell activation via subcutaneous injection
- Promotes muscle fiber repair and hypertrophy throughout the body
- Enhanced recovery from intense training or muscle injury
- Synergistic with IGF-1 LR3 and growth hormone peptides
- Useful in sarcopenia, post-injury recovery, and athletic performance
- Single injection provides multi-day anabolic signaling
- Potent analgesia superior to morphine on a per-weight basis
- May reduce perception of fatigue in high-intensity activity
- Longer-lasting than endogenous opioids due to D-amino acid substitution
- Research tool for mu-opioid receptor pharmacology
- Potential therapeutic application in refractory pain
- Side Effects
- Water retention and localized swelling
- Potential hypoglycemia at high doses
- Theoretical cancer growth risk (growth factor)
- Injection site reactions
- +1 more
- High addiction and dependence potential (mu-opioid agonism)
- Respiratory depression at high doses
- Nausea, vomiting, constipation
- Sedation and cognitive impairment
- +2 more
- Stacks With
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