Methenolone enanthate injection (brand names Primobolan Depot, Nibal Injection) is an androgen and anabolic steroid (AAS) medication. It is primarily used medically to treat anemia due to bone marrow failure and muscle wasting conditions, but it is also used illicitly for physique and performance enhancement. 

Key Information

• Medical Use: Methenolone enanthate is indicated for the management of muscle wasting syndromes (cachexia), osteoporosis, and specific types of anemia.

• Administration: It is administered via intramuscular injection. The enanthate ester provides a slow and gradual release from the injection site, ensuring steady hormone levels with a biological half-life of around 10.5 days.

• Non-Medical Use: In athletic and bodybuilding communities, it is a popular choice during cutting cycles to promote lean muscle mass, improve strength, and enhance endurance while minimizing water retention. It is favored for its relatively mild profile, which includes moderate anabolic effects and weak androgenic (masculinizing) effects.