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 | 10/10 | 10/10 |
| 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 keeps getting lumped in with peptides and "research chemicals" in fitness circles, but it is neither. It is a selective estrogen receptor modulator (a drug that turns the body's estrogen signals up in some tissues and down in others) — a small-molecule oral drug in the same chemical…
Tamoxifen
Tamoxifen, sold as Nolvadex, is a selective estrogen receptor modulator (SERM — a drug that turns the estrogen signal up in some tissues and down in others). It is one of the most thoroughly studied drugs in all of cancer medicine. It helps to be clear about what it is and isn't: tamoxifen is not a…