Compare · SERM
Clomiphene vs Tamoxifen
Both are serm compounds. Here's how they line up on the evidence — graded the same way.
| Clomiphene | Tamoxifen | |
|---|---|---|
| Evidence | Strong human | Strong human |
| Class | SERM | SERM |
| Summary | Clomiphene is a selective estrogen receptor modulator (SERM), not a peptide, with strong human evidence that it raises testosterone in hypogonadal men while preserving fertility; male use is off-label, it is prescription-only, and it is banned in sport at all times. | Tamoxifen is a selective estrogen receptor modulator (SERM) — an FDA-approved breast-cancer drug with one of the strongest evidence bases in oncology, not a peptide. Anabolic-steroid users take it off-label to blunt gynecomastia and attempt testosterone 'restart,' an unstudied practice that is banned in sport (WADA S4.2) and not without real risk. |
| Full profile → | Full profile → |
Clomiphene
Clomiphene is one of those compounds that constantly gets lumped in with peptides and "research chemicals" in fitness circles, but it is neither. It is a selective estrogen receptor modulator — a small-molecule oral drug in the same chemical family as tamoxifen — and that distinction explains…
Tamoxifen
Tamoxifen, sold as Nolvadex, is a selective estrogen receptor modulator (SERM) and one of the most thoroughly studied drugs in all of oncology. It is important to be precise about what it is: tamoxifen is not a peptide, not an aromatase inhibitor (those, like anastrozole and exemestane, block…