Compare · Anabolic steroid
Mesterolone vs Trenbolone
Both are anabolic steroid compounds. Here's how they line up on the evidence — graded the same way.
| Mesterolone | Trenbolone | |
|---|---|---|
| Evidence | 1/10 | 3/10 |
| 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. | Trenbolone is a potent injectable anabolic-androgenic steroid — never a peptide — with no human efficacy trials, an FDA-approved use only as a cattle growth-promoting implant, and serious androgenic, cardiovascular, and hormonal risks. |
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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.…
Trenbolone
Trenbolone is one of the strongest anabolic-androgenic steroids around — and also one of the least studied in people. It is not a peptide and not a SARM (a different class of muscle-building drug). It's a true steroid, chemically related to another steroid called nandrolone. Nobody ever ran proper…