Follistatin-344
otherFollistatin-344 is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Also known as: Follistatin 344, FS-344
Follistatin-344 acts by binding to and inhibiting activin and myostatin, which are part of the TGF-beta superfamily. This synthetic version of the naturally occurring human protein, follistatin, is derived from the FST gene. Early research interest in Follistatin-344 emerged when scientists sought ways to regulate muscle growth and differentiation, aiming to address muscle wasting conditions. The peptide's ability to modulate these pathways has opened avenues for various therapeutic explorations. It is also being studied for its anti-inflammatory properties and potential metabolic benefits. Today, it is primarily studied for its effects on:
- Muscle growth regulation
- Myostatin inhibition
- Tissue repair
- Inflammatory response modulation
Follistatin-344 has been investigated for its role in reproductive health.
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
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Size | |||
|---|---|---|---|
| Shop now | Shop | Shop | Shop |
| Product | Follistatin 344 | Follistatin-344 | Follistatin-344 |
| Size | 1 mg | 1 mg | |
| Price | $135.00 | $139.99 | $162.00 |
| Price/mg | $135.00/mg | $139.99/mg | $162.00/mg |
| Price change | 0% (10d) | 0% (16d) | 0% (16d) |
| Stock | In stock | In stock | Out of stock |
| Shipping | Same/next-day dispatch | 3–5 days | Same-day dispatch |
| Reviews | 1.0(4) | 2.6(12) | 4.9(15) |
| Purity | 99% | 99% | 99% |
| COA | — | — | — |
| Bulk discount | — | — | — |
