Follistatin-344, also known as FST-344, is a naturally occurring protein that belongs to the follistatin family, primarily recognized for its ability to bind and inhibit members of the transforming growth factor-beta (TGF-β) superfamily, particularly myostatin. Myostatin is a protein that normally limits muscle growth; by inhibiting myostatin, FST-344 may promote increased muscle mass and strength. This peptide is a synthetic version of the human follistatin protein, specifically a splice variant that contains 344 amino acids. Research into Follistatin-344 aims to understand its potential therapeutic applications in conditions characterized by muscle wasting, such as muscular dystrophy and sarcopenia, and its possible use in enhancing athletic performance. (PubChem)
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Known interactions
Category rule: peptide × hormone
Note
Injectable peptides plus hormones can have overlapping or compounding effects that aren't always well characterized.
Track bloodwork with a provider; don't assume combinations are neutral.
Frequently asked
Sources referenced
["PubChem", "DrugBank", "NIH Office of Dietary Supplements (ODS)"]
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the peptide category or studied for the same goals.