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 | No credible evidence | Animal only |
| 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 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…
Trenbolone
Trenbolone is one of the most potent anabolic-androgenic steroids in circulation, but it is also one of the least studied in humans. It is not a peptide and not a SARM — it is a true steroid, a chemically modified relative of nandrolone. It was never carried through human anabolic trials, so…