Compare · SARM
Testolone vs S23
Both are sarm compounds. Here's how they line up on the evidence — graded the same way.
| Testolone | S23 | |
|---|---|---|
| Evidence | Animal only | Animal only |
| Class | SARM | SARM |
| Summary | 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. | S23 is a synthetic selective androgen receptor modulator (SARM) — not a peptide — studied only in rodents as a male contraceptive candidate. There are no human trials, and it is an unapproved drug banned in sport. |
| Full profile → | Full profile → |
Testolone
Testolone (RAD-140) is a selective androgen receptor modulator (SARM) — a non-steroidal small molecule, not a peptide and not an anabolic steroid. It was developed as an investigational drug, never approved for any use, and is widely sold online for muscle building despite the complete absence of…
S23
S23 is a synthetic selective androgen receptor modulator (SARM) — explicitly not a peptide — that binds the androgen receptor and acts as a tissue-selective agonist, aiming for anabolic effects in muscle and bone with relatively less prostate/seminal activity. It was designed as a male…