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 | Animal only | Preliminary human |
| 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 selective androgen receptor modulator (SARM), a synthetic small molecule — not a peptide and not an anabolic steroid. It is frequently sold in fitness, biohacking, and "research chemical" channels as a muscle-building "safer steroid alternative," but its real evidence base is…
Ostarine
Ostarine (MK-2866 / enobosarm) is a selective androgen receptor modulator that is frequently — and incorrectly — sold on the gray market as a "safer steroid alternative" for muscle building. It is not a peptide and not a dietary-supplement ingredient. There is genuine human evidence that it raises…