Healing & Recovery / Subcutaneous
PEG-MGF
Also known as Pegylated Mechano Growth Factor
PEG-MGF is a pegylated form of MGF that provides systemic effects throughout the body. It promotes muscle cell repair and growth, especially after intense training.
What is PEG-MGF used for? Research has focused on promotes muscle fiber repair; enhances recovery from training; may increase muscle growth.
Compare with other peptides studied forrecovery and healing,muscle growth,cognitive performance
PEG-MGF injection at a glance
Figures from the published research literature. Research use only.
- Dose range
- 200-400 mcg
- Route
- Subcutaneous
How often, when, and the dosing notes are in the dosing reference further down.
Work out your units in the free calculatorBeginner basics
Plain-English guide to PEG-MGF
- What it does
- PEG-MGF helps repair muscle fibers and speed up recovery after hard workouts by sending repair signals throughout your body. Researchers use it to study muscle growth and healing, especially after intense training.
- Typical dose
- 200-400 micrograms injected under the skin 2-3 times per week.
- When to inject
- Best used on training days or right after workouts when your muscles are primed for repair.
- Storage
- Keep the dry powder in the fridge. Once you mix it with liquid, store it in the fridge and use within a few weeks.
- Beginner tip
- Because this version lasts longer in your body than regular MGF, you don't need to inject as often-this makes it easier to stick with a routine.
Research status
- Evidence grade C
- Mostly animal or in-vitro studies, with limited human data.
- Research only
- No regulatory approval in any major jurisdiction. Research use only.
Research compound
For research purposes only. Not approved for human use. Not medical advice.
Research areas
- Promotes muscle fiber repair
- Enhances recovery from training
- May increase muscle growth
- Neuroprotective properties
- Improved endurance
- Faster healing from injury
Side effects
| Effect | How often | Severity |
|---|---|---|
| Injection site reactions (redness, swelling, itching)Typically resolves within 1-2 hours. Minimize by rotating injection sites, allowing solution to reach room temperature, and using proper injection technique. Apply ice if swelling persists. | Common | Mild |
| HeadacheMay occur within 1-4 hours of injection. Usually self-resolving. Ensure adequate hydration and monitor for pattern. Discontinue if severe or persistent. | Uncommon | Mild |
| Mild hypoglycemia symptoms (dizziness, fatigue, hunger)IGF-1 can enhance glucose uptake. Consume a small carbohydrate-containing snack if symptoms occur. Monitor blood glucose if diabetic or pre-diabetic. | Uncommon | Mild |
| Lipodystrophy (localized fat loss or thickening at injection sites)Develops with repeated injections in the same area. Prevent by strict site rotation (minimum 1 inch spacing). If lipodystrophy develops, discontinue injections in that area for 4-6 weeks. | Uncommon | Moderate |
| Carpal tunnel syndrome symptoms (wrist pain, numbness)Reported with high-dose or prolonged IGF-1 use due to tissue expansion. Discontinue if symptoms develop and seek medical evaluation. Risk is lower with pegylated forms at standard dosing. | Rare | Moderate |
| Joint or muscle pain (myalgia, arthralgia)May occur as muscles adapt to increased growth signaling. Usually resolves within 1-2 weeks. Ensure adequate recovery and nutrition. | Uncommon | Mild |
| NauseaUncommon with subcutaneous administration. If occurs, take with food or reduce injection volume. Discontinue if persistent. | Rare | Mild |
| Hypersensitivity reaction (rash, urticaria, angioedema)Seek immediate medical attention if severe swelling, difficulty breathing, or systemic rash develops. May indicate allergy to pegylated compounds or peptide itself. Discontinue immediately. | Rare | Serious |
| Elevated blood glucose (hyperglycemia)IGF-1 can reduce insulin sensitivity at high doses. Monitor fasting glucose and HbA1c if using regularly. Risk is higher in individuals with insulin resistance or metabolic syndrome. | Rare | Moderate |
Dosing reference
Dose scale from the research
- Starting
- 100 mcg
- Typical
- 200 mcg
- Upper end
- 300 mcg
| Parameter | Value |
|---|---|
| Dose range | 200-400 mcg |
Frequency, timing and route are for members | |
Checked October 2026
Research disclaimer. Figures are drawn from published research literature and community logs. They are not clinical recommendations. Consult a qualified professional. Research use only.
Reconstitution guide
- Do not use saline or bacteriostatic saline, use only bacteriostatic water for reconstitution
- Do not shake the vial vigorously; gentle swirling prevents peptide degradation
- Discard immediately if the solution appears cloudy, discolored, or contains visible particles
- Use within 30 days of reconstitution when stored at 2-8°C
- Do not freeze the reconstituted solution; freezing may denature the peptide
- Use the PeptideVolt reconstitution calculator for your exact concentration
Worked example
With 5 mg in the vial, the water you add changes the draw. Mixed with 1 mL that is 5,000 mcg per mL, so on a U-100 syringe 100 mcg is 2 units and 300 mcg is 6 units. Mixed with 2 mL it is 2,500 mcg per mL, so 100 mcg is 4 units and 300 mcg is 12 units.
Storage and stability
Refrigerate after reconstitution
Molecular and pharmacological data
| Half-life | Approximately 6-8 hours (pegylation extends half-life compared to unmodified MGF, which is ~2-3 hours) |
|---|
PEG-MGF (pegylated Mechano Growth Factor) is a modified form of IGF-1 Ec that activates muscle satellite cells and promotes myogenic differentiation and proliferation. The pegylation (polyethylene glycol coating) extends the peptide's half-life, allowing systemic distribution throughout the body and sustained anabolic signaling in muscle tissue. It works primarily through IGF-1 receptor activation on muscle cells, triggering protein synthesis and muscle fiber growth, particularly in response to mechanical stress from resistance training.
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Research citations
2 sources
PEG-MGF muscle repair
Pegylated mechano growth factor
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Research use only. All content on this page is provided for informational and educational purposes related to scientific research. PEG-MGF is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.