Metribolone (also known as Methyltrienolone) is an extremely potent synthetic anabolic-androgenic steroid (AAS) derived from trenbolone. It is classified as a 17α-methylated oral steroid, which means it is designed to survive liver metabolism and be effective when taken orally. Metribolone is widely regarded as one of the most powerful anabolic steroids ever created.
Chemical Properties
-
Chemical name: 17α-methyl-δ^9,11-trenbolone
-
Anabolic to androgenic ratio: Extremely high
-
Oral bioavailability: Very high, but hepatotoxicity is severe
-
Detection time: Several weeks due to long half-life
Uses and Effects
Metribolone was originally developed for medical research and veterinary purposes, but its extreme potency made it unsuitable for regular therapeutic use. Its effects include:
-
Rapid muscle growth – Users can experience significant gains in lean muscle mass in a short period.
-
Strength improvement – Notable increases in power and performance.
-
Nitrogen retention – Improves protein synthesis and recovery.
-
Fat loss – Can contribute to a lean, hard physique due to its anabolic properties.
Risks and Side Effects
Metribolone is highly toxic to the liver. Even short-term use can cause serious liver damage. Other potential side effects include:
-
Severe hepatotoxicity (liver failure risk)
-
Suppression of natural testosterone production
-
Increased cholesterol and cardiovascular strain
-
Severe androgenic effects: hair loss, acne, aggression
-
Virilization in women (deepened voice, body hair growth)
Due to these risks, Metribolone is rarely used outside of controlled research and is considered unsafe for casual supplementation.
Legal Status
Metribolone is classified as a controlled substance in many countries. It is not approved for medical use and is typically restricted to laboratory or veterinary research. Possession or distribution without authorization may carry legal penalties.




Reviews
There are no reviews yet.