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SARMs / Myostatin inhibitors

316 In the index

Follistatin 315 FST-315

An engineered protein studied in animals for blocking a natural signal that limits muscle growth. Rodent studies show dramatic muscle gains, but there's no human research showing it's safe or effective in people.

Also known as FS-315

Effects Build muscle
Routes Injectable
Legal status Research chemical
WADA Banned at all times

Reported dosing

User-reported

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose Not established for humans
Reported range Animal/in-vitro study doses only; forum reports of 100 mcg/day injections circulate without supporting human data
Route Subcutaneous injection
Frequency Once daily (per forum reports)
Duration Not established

A myostatin-inhibiting protein studied only in animal/cell models; no human clinical trials exist. Human use is entirely unsupervised and unstudied.

Where this comes from Animal/in-vitro studies only; user-reported research-chemical literature

There is no approved human dosing for this compound. The figures above are what users and vendors report, not what has been established as safe or effective. Treat them as a record of what is done, not as guidance.