Peptide · Research-only
Follistatin
A protein that blocks myostatin to permit muscle growth; experimental and unapproved.
Key facts
- Also known as: FS-344
- Status: Research-only
- Used for: Myostatin inhibitor
- Natural counterpart: It IS a natural protein that blocks myostatin.
- Target enzyme / receptor: Myostatin & activin (TGF-β ligands — binds & neutralises them)
- Signalling pathway: Relieves SMAD2/3 inhibition of muscle → muscle growth
In plain terms: Removes the brake (myostatin) that normally limits muscle growth. - Crystal structure: no peptide–target complex in the PDB yet — study the target ↗
Status & safety
This is sold as an unapproved “research chemical” (labelled “not for human use”). It is not approved, is unregulated, and carries real safety and legal risks. We cover it for information, not to encourage buying or using it.
Research & clinical studies
Explore the biochemistry and clinical evidence for Follistatin — these open live, date-sorted searches, so they always show the latest.
Read research papers on PubMed ↗
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