Metribolone MT-Tren

An extremely powerful lab chemical used almost exclusively as a research tool in scientific studies, never sold as an actual medication. It has essentially no human use history outside accidental exposure, and the little that's known points to severe liver damage risk even at tiny amounts.

Also known as Methyltrienolone, R1881, Metribolona, 17alpha-Methyltrienolone, Metribolonum, Ru-1881, R 1881

Effects Build muscle

Routes Oral

Legal status Research chemical

WADA Banned at all times

3D Molecular Structure of C₁₉H₂₄O₂

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Chemistry

Formula: C19H24O2
Molar mass: 284.4
CAS: 965-93-5
PubChem CID: 261000
IUPAC name: (8S,13S,14S,17S)-17-hydroxy-13,17-dimethyl-1,2,6,7,8,14,15,16-octahydrocyclopenta[a]phenanthren-3-one
InChIKey: CCCIJQPRIXGQOE-XWSJACJDSA-N

Reported dosing

Limited data

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose Not established (no legitimate human use; extremely potent)

Reported range Historical/underground reports: 0.5-1 mg/day (notably low due to extreme potency)

Route Oral

Frequency Once or twice daily

Duration Not established

Also known as methyltrienolone; one of the most potent oral anabolic steroids ever synthesized, historically used only as a laboratory research tool, never as a human medicine. Extremely hepatotoxic even at very low doses; no legitimate current source.

Where this comes from Historical pharmacology literature; case reports

Human data for this compound is limited. Read the figures above as a record of reported use rather than established dosing.

Variants

Name	Abbr	Route	Notes
Methyltrienolone	MTREN	Oral	The oral form; used in tiny doses due to extreme toxicity.