Compare · SARM
Ostarine vs Testolone
Both are sarm compounds. Here's how they line up on the evidence — graded the same way.
| Ostarine | Testolone | |
|---|---|---|
| Evidence | 7/10 | 3/10 |
| Class | SARM | SARM |
| Summary | 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. | An investigational, non-approved selective androgen receptor modulator (SARM) with no published human efficacy evidence for fitness use, a documented serious liver-injury case, and prohibited status in sport. |
| Full profile → | Full profile → |
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…
Testolone
Testolone (RAD-140) is a selective androgen receptor modulator, or SARM (a drug that switches on the body's testosterone-sensing receptor in a targeted way). It is a small molecule made in a lab — not a peptide, and not an anabolic steroid. It was created as an experimental drug, was never approved…