What it is
An investigational non-steroidal selective androgen receptor modulator (SARM) studied in oral form.
How it works
Tissue-selective partial agonist of the androgen receptor, with preferential anabolic activity in muscle and bone and reduced activity in androgenic tissues such as prostate.
Where it's used
Investigated in clinical trials for muscle wasting and related conditions; did not achieve regulatory approval. Listed on the WADA prohibited list.
Regulatory status
Not FDA-approved; investigational compound. Sale as a dietary supplement is prohibited by the FDA.
Tracking it
Ostarine is oral, which makes consistency the whole game — a simple daily check-off with a reminder beats memory every time. with a half-life of about 24 hours, a dose log also lets a tracker model the relative amount still in your system between doses.
Source
Public reference
Last reviewed 2026-06-11