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Attribute
Myostatin Inhibitor
Follistatin 344
SummaryPre-clinical myostatin inhibitor — outsized muscle growth in animal models.
MechanismBinds and neutralizes myostatin and activin, releasing the brake on muscle growth.
Top outcomes
  • Lean muscle80
Evidenceanecdotal
Half-life~unclear in humans
Administrationsubq, im
Legal statusresearch only
SafetyUnknown long-term safety; theoretical concerns around uncontrolled growth.
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