Compare · SARM
Andarine vs YK-11
Both are sarm compounds. Here's how they line up on the evidence — graded the same way.
| Andarine | YK-11 | |
|---|---|---|
| Evidence | Animal only | Animal only |
| 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. | YK-11 is a synthetic steroidal SARM marketed for muscle growth, but its claimed human benefits rest entirely on cell-culture data — there are no human trials, and it is an unapproved drug banned in sport. |
| 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…
YK-11
YK-11 is a synthetic compound sold as a SARM (selective androgen receptor modulator) and promoted for muscle growth. Despite the marketing, it is not a peptide — it is a steroidal molecule built on a 19-norandrostane backbone. Its reputation as a uniquely powerful "myostatin-inhibiting SARM" rests…