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 | 1/10 | 10/10 |
| 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. |
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Mesterolone
Mesterolone, almost always sold under the brand name Proviron, is a man-made oral steroid. More precisely, it's an anabolic-androgenic steroid (AAS) — a synthetic relative of the male hormone dihydrotestosterone (DHT). It's an androgen (a male-hormone-type drug), not a peptide and not a SARM.…
Testosterone
Testosterone is the body's main androgen (the main male sex hormone), and it's the molecule the whole family of anabolic-androgenic steroids (AAS) is built from. It's a steroid, not a peptide. Doctors have prescribed it for decades as replacement therapy for men whose bodies don't make enough — a…