FS344

Also known as FS344 — this name points to Follistatin-344 in our directory.

About Follistatin-344

A peptide that blocks myostatin signaling—discussed for muscle mass but with serious safety unknowns.

Follistatin inhibits myostatin, a protein that limits muscle growth. Gene-therapy and peptide approaches have shown dramatic muscle gains in animals. Human use is experimental; long-term safety is not established.

Read the full peptide profile →

Where you will see FS344

FS344 is a marketing or trade name people search when they mean Follistatin-344. On retail shelves the INCI list on the back of the package may use a longer systematic name even when the front label shows a nickname.

Compare Follistatin-344

Other names

FS344 Myostatin inhibitor peptide

Common questions

Is FS344 the same as Follistatin-344?

Yes. FS344 is a brand or nickname that refers to Follistatin-344 in our directory—the same active molecule, different packaging or marketing name.

What is Follistatin-344?

A peptide that blocks myostatin signaling—discussed for muscle mass but with serious safety unknowns. Follistatin inhibits myostatin, a protein that limits muscle growth. Gene-therapy and peptide approaches have shown dramatic muscle gains in animals. Human use is experimental; long-term safety is not established.

How do I find FS344 on a label?

FS344 may appear on retail product fronts, but confirm the INCI list matches Follistatin-344 before assuming the formula is identical across brands.