Ostarine (mk-2866)
People mainly take Ostarine (mk-2866) for performance, weight loss. Based on 2 first-hand reports. Ranked #1265 of 1,974 overall.
14
User score
Mostly positive50% positive0% mixed0% negative50% unclear
Of reports that state an outcome, 100% are positive.
Clinical research
Research pending
High-risk compound. SARMs are not approved as supplements, carry serious and sometimes irreversible risks, are banned in competitive sport and may be restricted where you live. Nothing here is a recommendation to use it.
What Ostarine (mk-2866) does, according to users
Of the people who reported each effect, the share who said it got better.
betterno changeworse
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
Research data for Ostarine (mk-2866) is being compiled.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
10-30 mgdaily, 6-10 week cycle
Reported side effects
How often each side effect came up across all reports.
No side effects reported so far.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“Ostarine is a selective androgen receptor modulator (SARM)”
“Strength continuing to go up...chipping away”
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User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate