Compare · SARM
LGD-3303 vs YK-11
Both are sarm compounds. Here's how they line up on the evidence — graded the same way.
| LGD-3303 | YK-11 | |
|---|---|---|
| Evidence | 3/10 | 3/10 |
| Class | SARM | SARM |
| Summary | LGD-3303 is a nonsteroidal selective androgen receptor modulator (SARM), not a peptide. Its evidence is preclinical (rodent and equine) only — there are no human trials. It is an unapproved research chemical and is banned at all times in sport. | 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 → |
LGD-3303
LGD-3303 is a SARM — a selective androgen receptor modulator (a lab-made molecule that switches on the body's androgen, or male-hormone, receptors in some tissues but not others). It is not a peptide, and it is not a steroid. It came out of the same Ligand Pharmaceuticals research program as…
YK-11
YK-11 is a lab-made compound sold as a SARM (selective androgen receptor modulator — a drug designed to switch on the body's muscle-building signals) and pitched as a way to add muscle. The marketing aside, it is not a peptide. It is a steroid-style molecule built on a 19-norandrostane backbone (a…