PepSight
MUSCLE DEVELOPMENT

MGF (IGF-1EC)

MGF (IGF-1EC) is a muscle development peptide used in evidence-based, physician-supervised protocols. Use post-resistance training to maximize satellite cell-driven muscle hypertrophy.

What is MGF (IGF-1EC)?

Mechano Growth Factor — C-domain peptide spliced from IGF-1 gene after mechanical loading (exercise). Activates satellite cell (muscle stem cell) proliferation before they fuse to damaged muscle fibers. Highly local effect — inject into trained muscle within 30-60 min post-workout for maximum satellite cell activation.

Uses & clinical decision logic

Use post-resistance training to maximize satellite cell-driven muscle hypertrophy. Time-sensitive — most effective when injected into worked muscle shortly after training.

MGF (IGF-1EC) dosage & administration

Vial sizeBAC waterDosing rangeUnits / doseFrequencyRoute
2mg1mL200-400mcg10-20 unitsPost workoutIM
5mg2mL200-400mcg8-16 unitsPost workoutIM

Safety & contraindications

Local injection only — systemic SubQ blunts effect.

Stacking & combinations

Sequence: train → MGF injection into worked muscle → IGF-1 LR3 later for systemic muscle protein synthesis amplification.

Related peptides

Frequently asked questions

What is MGF (IGF-1EC) used for?

Use post-resistance training to maximize satellite cell-driven muscle hypertrophy. Time-sensitive — most effective when injected into worked muscle shortly after training.

What is the typical MGF (IGF-1EC) dosage?

Common dosing ranges from 200-400mcg (Post workout, IM). Exact dosing is individualized and set by a licensed physician.

How is MGF (IGF-1EC) administered?

MGF (IGF-1EC) is typically administered via IM.

What are the contraindications for MGF (IGF-1EC)?

Local injection only — systemic SubQ blunts effect.

Considering MGF (IGF-1EC)?

Build a physician-supervised protocol around your goal — no gatekeeping, real doctors, 503A compounding pharmacies.

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This page is for educational purposes only and is not medical advice. Peptide therapies described here are provided under physician supervision through 503A compounding pharmacies. Many peptides are not FDA-approved for the uses described. Do not start, stop, or change any protocol without consulting a licensed physician.