Anabolic steroidAndrogen19-nortestosteroneAnabolic steroidOral17-alpha-alkylatedInvestigational

Methylnortestosterone

Also known as 17-methyl-19-nortestosterone · Methyl-nortestosterone · MENT oral relative

Written by enwyReviewed 5 Aug 20261 sources0 comments

Methylnortestosterone (17alpha-methyl-19-nortestosterone, MENT's oral relative) is an orally active 19-nor androgen investigated in the context of male hormonal contraception via its acetate/enanthate injectable cousins. The 17-alpha-methylated oral form is a potent, non-aromatising (weakly aromatising) androgen with progestogenic activity, oral hepatotoxicity, and strong gonadotropin suppression.

01 Overview

Methylnortestosterone relates to the trestolone (MENT, 7-alpha-methyl-19-nortestosterone) research program aimed at hormonal male contraception, where its potent suppression of spermatogenesis is a desired effect. The 17-alpha-methylated oral analogue trades injectable delivery for oral activity at the cost of hepatic strain.

As a 19-nor compound it is progestogenic and only weakly aromatising; suppression is strong, which is precisely why the parent class was studied as a contraceptive. Human data on the specific oral methylated form are limited.

02 Mechanism

Potent 19-nor androgen-receptor agonist with progestogenic activity; 17-alpha-methylation confers oral activity; weak aromatisation.

03 Dosing

Tier	Dose	Route	Notes
Anecdotal	10–30 mg/day	Oral	No approved human dose; anecdotal only.

Ester comparison

Ester	Half-life	Injection freq.	Testosterone by mass

04 Effects

Effect	Magnitude	Evidence
Lean mass gainPotent 19-nor anabolic activity.	modest	Anecdotal
Improved recovery/well-beingReported androgenic well-being from the MENT-related class.	unclear	Anecdotal

05 Side effects

Effect	Severity	Frequency	Evidence
Hepatotoxicity17-alpha-methyl oral raises transaminases.	Severe	Expected for class	Preclinical
Progestogenic side effectsLibido loss and possible gynecomastia.	Moderate	Common	Preclinical
Strong HPTA suppressionMarked suppression of spermatogenesis and testosterone (basis of contraceptive interest).	Severe	Universal	Clinical

06 Legal status

United States

Schedule III controlled

Anabolic steroid. · as of Jan 2026

United Kingdom

Class C

Anabolic steroid. · as of Jan 2026

07 References

7alpha-methyl-19-nortestosterone (MENT) and related nortestosterones for male contraceptionJournal of Andrology / Contraception

08 Discussion0 comments

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This page is reference information, not medical advice. Doses and protocols are documented as they appear in the clinical literature and in practice — describing them is not a recommendation to use them. Countermeasures listed here are not a substitute for a physician. Legal status varies by jurisdiction and changes.