Independent reference & toolkit 100 compounds graded · Last reviewed June 2026

Compare · Anabolic steroid

Mesterolone vs Methenolone

Both are anabolic steroid compounds. Here's how they line up on the evidence — graded the same way.

MesteroloneMethenolone
Evidence 1/10 8/10
ClassAnabolic steroidAnabolic steroid
SummaryMesterolone 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.A DHT-derived anabolic-androgenic steroid once used medically for bone-marrow-failure anemias and historically studied in breast cancer; its 'mild and safe' bodybuilding reputation rests on lore, not controlled performance trials.
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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.…

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Methenolone

Methenolone (sold under the brand name Primobolan) is a lab-made anabolic-androgenic steroid built from dihydrotestosterone, or DHT (a strong natural male hormone). It is an androgen — a male-type hormone — not a peptide. Its genuine medical track record is small: a handful of old, modest studies…

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