Peptide GuidePEG-MGF

The Peptide Guide

All healing & recovery peptides

PEG-MGF

Muscle growthHealing

PEG-MGF is a longer-acting form of mechano growth factor. Pegylation lets it last longer than native MGF.

What does it do?

Is a longer-acting form of mechano growth factor, an IGF-1 splice variant
Activates satellite cells after mechanical stress
Supports local fiber repair more than whole-body IGF-1 effects
Best placed near the trained muscle
Less systemic than IGF-1 LR3
Used in short training blocks while load is high

How does it work?

MGF is the local IGF-1 splice made after mechanical stress
PEG keeps it in circulation longer than native MGF
Signals satellite cells to wake up and help repair fibers
Does not replace food or progressive overload
Injection near the trained area is the usual plan
Dosed a few times a week, not many times a day

What to expect?

Next-day soreness can fade a little sooner
The muscle does not fill like IGF-1 LR3
The trained area can feel a bit more ready for the next session
Fullness is modest
The effect is local, not a whole-body GH feel

How it's typically administered

Sub-Q injectionSubcutaneous injectionnear the trained muscle
Intramuscular injectionIntramuscular injectionin some protocols

How it's typically dosed

Most common dose200–400 mcg
Frequency2–3x weekly, often post-workout
Cycle duration4–6 weeks

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