Pharmocological action

NAPOSIM (Methandienone) is a testosterone derived anabolic androgenic steroid.

Officially, it is a structurally altered form of the primary male androgen testosterone. Methandienone is the testosterone hormone with an added double bond at the carbon one and two position.

This slight alteration reduces the hormone’s androgenic nature, it also carries an added methyl group at the 17th carbon position that allows the hormone to survive oral ingestion, officially classifying his as a C17-alpha alkylated steroid.

On a functional basis, NAPOSIM is one of the easier anabolic steroids to understand.

This steroid will largely provide its anabolic benefits by enhancing protein synthesis, nitrogen retention and glycogenolysis. Protein synthesis represents the rate by which cells build proteins, the building blocks of muscle.

Nitrogen retention, this is important as all muscle tissue is comprised of approximately 16% nitrogen.


Dosage and method of use

For newbie, Methandienone treatment standard doses will normally fall range in the 10-20 mg per day;

For performance enhancing athletes, 30-50 mg per day is generally a standard dose of NAPOSIM;

Higher doses can be used, but that doses will require more caution and effort in controlling side effects.



Side effects

Estrogenic: gynecomastia, water retention, high blood pressure;

Androgenic: acne, accelerated hair loss in those predisposed to male pattern baldness and body hair growth, virilization symptoms (in women);

Cardiovascular: HDL cholesterol suppression and increases in LDL cholesterol.




A clear oily solution.



NAPOSIM (Methandienone): 1 ml Ampoules;

NAPOSIM (Methandienone): 10 ml Vial.


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