Myostatin-binding protein researched for muscle growth by removing the body's brake on muscle development.
Follistatin-344 is a version of the natural protein follistatin, whose claim to fame is binding and neutralizing myostatin — the body's built-in brake on muscle growth. Remove the brake, the thinking goes, and muscle can grow beyond its normal genetic limit.
The dramatic myostatin-knockout images (super-muscular animals, rare super-strong children) are what drive interest, and follistatin does powerfully inhibit myostatin in research models. It also influences other growth factors in the TGF-beta family.
In practice it is one of the most expensive, most frequently counterfeited and least human-validated peptides here. Real follistatin protein is fragile and hard to dose, long-term effects are poorly understood, and short cycles are the norm.
Blocks myostatin to allow greater muscle growth.
Powerful in animal models; human aesthetic evidence is limited and anecdotal
Used in short cycles aiming for lean-mass gains.
Mechanistically striking; real-world results inconsistent
May support muscle repair via growth-factor modulation.
Speculative in humans
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Mostly preclinical (animal/in-vitro) evidence with a clear mechanism. Human effects are largely anecdotal.
Experienced users chasing muscle growth beyond normal limits, aware of cost and counterfeit risk
Use short cycles; long-term effects are unknown. Sourcing is a major issue — much of what is sold is underdosed or fake.
Women are cautious candidates given potency and thin data
Limited female data and a potent growth signal. Avoid with any cancer history and in pregnancy.
Limited female data; potent growth signal.
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Avoid with any history of cancer — broadly promotes tissue growth.
Use short cycles; long-term effects are poorly characterized.
Frequently underdosed or counterfeit — source carefully.
Standardized data for Follistatin-344 is limited. These are the general effects to watch for with this type of compound.
Rotate sites, use sterile technique, let alcohol dry before injecting.
Hydrate and ease the dose; usually transient as your body adjusts.
Individual responses vary. Stop and consult a clinician for severe, persistent, or unexpected reactions.
14 steps with photos, pro tips, and a dosing calculator.
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