Peptide Arcana
MGF: Muscle makes this form of the growth factor IGF-1 when loaded or damaged. Vials sell only its tail, the E peptide, for repair.

MGF

Listed as Mechano growth factor

Not FDA approvedBones and muscles

How it works

Muscle makes this form of the growth factor IGF-1 when loaded or damaged. Vials sell only its tail, the E peptide, for repair.

What it's made of

A variant of the IGF-1 gene that muscle produces when it is loaded or damaged. What is sold is its final tail (the E peptide), often with PEG to make it last longer.

What it's for

Prescribed for
Nothing.
Sold as
The factor your muscle makes when you train, in a vial: repair and growth.
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Educational satire, not medical advice.