Lean mass
Increase · moderate
Myostatin inhibition
Literature evidence
Vivy evidence dossier
Also indexed as Follistatin, FST 344
Evidence labels describe the material available in this reference entry. They do not establish that a compound is appropriate, effective, or safe for you. Inclusion is not a recommendation to use it.
Reference context
This field summarizes the library record. Half-life can vary with formulation, indication, and individual clinical context.
Observed relationships
Increase · moderate
Myostatin inhibition
Literature evidence
Increase · small
Muscle growth signaling
Literature evidence
Decrease · small
Activin binding reduces FSH
Literature evidence
Modulate · small
Pituitary feedback
Literature evidence
Keep in view
Follistatin 344 is a myostatin inhibitor that binds and neutralizes myostatin, promoting muscle growth. Investigational. Not FDA-approved.
Keep the reference close
Hey Vivy helps you organize protocols and review change over time. It does not diagnose, prescribe, or replace qualified care.