Side effects and watch-outs
- Testosterone suppression
- Potential liver toxicity
- Joint pain
- Hair loss
- Limited safety data
- PCT required
SARM / Myostatin Inhibitor
YK-11
Steroidal SARM that also inhibits myostatin — the protein that limits muscle growth. Potentially the most anabolic SARM available. Promotes follistatin, which antagonizes myostatin. Very limited safety data. Structurally similar to steroids — may have similar hepatotoxicity concerns.
Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.