Compare · SARM
Andarine vs Ostarine
Both are sarm compounds. Here's how they line up on the evidence — graded the same way.
| Andarine | Ostarine | |
|---|---|---|
| Evidence | 3/10 | 7/10 |
| Class | SARM | SARM |
| Summary | A non-steroidal SARM with tissue-selective anabolic activity in rodents, but no completed human efficacy trials; clinical development was halted over vision side effects. | Ostarine is an investigational selective androgen receptor modulator (SARM) — not a peptide — with real but limited human evidence for lean-mass effects, no regulatory approval anywhere, and documented liver-injury and hormone-suppression signals. |
| Full profile → | Full profile → |
Andarine
Andarine (S4) is a SARM — a selective androgen receptor modulator (a lab-made molecule designed to act on the body's testosterone-sensing system in a targeted way). It is a synthetic small molecule, not a peptide and not an anabolic steroid. You will often see it sold in fitness, biohacking, and…
Ostarine
Ostarine (also called MK-2866 or enobosarm) is a selective androgen receptor modulator (a compound designed to act like a muscle-building hormone in some tissues but not others). It is often — and wrongly — sold online as a "safer steroid alternative" for building muscle. It is not a peptide, and…