A neutral, evidence-rated side-by-side of Mesterolone (Proviron, oral DHT) and Drostanolone Propionate (Masteron). Figures are typical reference values, not recommendations.
| Mesterolone (Proviron, oral DHT) | Drostanolone Propionate (Masteron) | |
|---|---|---|
| Type | Anabolic steroid | Anabolic steroid |
| Evidence level | Studied | Emerging |
| Primary class | Androgen | Androgen |
| Half-life | ~12-13 hours | ~2-3 days (propionate ester) |
| Typical dose | 50–100 mg/day | 300–400 mg/wk |
| Anabolic : androgenic | 40 : 100 | 62 : 25 |
| Aromatises | No | No |
| Hepatotoxicity | Low | Low |
| HPTA suppression | Moderate | Severe |
| Documented effects | 3 | 3 |
| Documented side effects | 3 | 3 |
An orally active DHT derivative (Proviron) used clinically for androgen deficiency and male infertility. It is weakly anabolic but a strong androgen-receptor binder and a modest anti-oestrogen, so it is used less to build muscle than to raise free testosterone by displacing it from SHBG, add a 'dry' hardening effect, and support libido. Not 17-alpha-alkylated, so low liver toxicity.
Full Mesterolone (Proviron, oral DHT) page →A DHT-derived, non-aromatising injectable (2-alpha-methyl-dihydrotestosterone) historically used to treat breast cancer for its anti-oestrogenic effect. In bodybuilding it is valued for a hard, dry, defined look near contest time rather than raw mass, with a short propionate ester requiring frequent injection. Androgenic side effects (hair loss, acne) predominate; oestrogenic effects are essentially absent.
Full Drostanolone Propionate (Masteron) page →