Follistatin-344

Preclinical

Follistatin-344 (FST-344)

Category
Growth Hormone
Aliases
FST-344, FS-344
Administration
Subcutaneous injection (preclinical/research use)

Documented benefits

Tier 1 · Peer-reviewed / regulatory

Growth Hormone

Follistatin-344's defining research application, though its mechanism (myostatin blockade) is distinct from every GH-secretagogue peptide in this category.

Myostatin inhibition

Its core, defining mechanism — neutralizing myostatin and activin A to remove the body's natural limit on muscle growth.

Muscle growth

Produced some of the most dramatic muscle mass increases observed in any animal peptide study, by removing a growth-limiting signal rather than adding a growth-promoting one.