Compare · Anabolic steroid
Mesterolone vs Testosterone
Both are anabolic steroid compounds. Here's how they line up on the evidence — graded the same way.
| Mesterolone | Testosterone | |
|---|---|---|
| Evidence | No credible evidence | Strong human |
| Class | Anabolic steroid | Anabolic steroid |
| Summary | Mesterolone is an oral, DHT-derived anabolic-androgenic steroid once sold abroad for male hypogonadism and idiopathic infertility. Controlled human trials for its two historic uses (fertility, mood) are negative or unconvincing, and its performance 'anti-estrogen' reputation has no strong human evidence. | Testosterone is the principal human androgen and the prototypical anabolic-androgenic steroid (AAS) — not a peptide — with strong, reproducible human evidence for dose-dependent muscle and strength gains, FDA approval only for confirmed hypogonadism, Schedule III control, and real cardiovascular, hematologic, and hormonal safety signals. |
| Full profile → | Full profile → |
Mesterolone
Mesterolone, almost always known by the brand name Proviron, is a synthetic, orally active anabolic-androgenic steroid (AAS) derived from dihydrotestosterone (DHT). It is an androgen — not a peptide and not a SARM. Unlike most of the other agents people lump it in with, mesterolone was never…
Testosterone
Testosterone is the body's principal androgen and the molecule from which the entire class of anabolic-androgenic steroids (AAS) is derived. It is a steroid, not a peptide. It has decades of FDA-approved medical use as replacement therapy for men with confirmed hypogonadism, and the human evidence…