Endocrine and genitourinary system
women: violation of menstruation and amenorrhea, inhibition of gonadotropin secretion, masculinization. With prolonged use: atrophy of the mammary glands, virile syndrome (coarsening of the voice, excessive growth of hair on the face and body); men: gynecomastia, priapism, oligospermia, impaired spermatogenesis.
Leather: Hirsutism, male pattern baldness, acne.
Violations of the water-electrolyte state: the retention of sodium, chlorine, water, potassium, calcium and inorganic phosphates.
Digestive system: nausea, cholestatic jaundice, impaired liver function, "hepatic" purpura, or tumor neoplasms of the liver.
Blood coagulation system: inhibition of plasma clotting factors II, V, VII and X, bleeding in patients taking anticoagulant drugs inside.
central nervous system: violations of libido, headaches, fear, paresthesia.
Metabolic disorders: increasing the concentration of cholesterol in the blood plasma.
Boys: premature puberty, premature closure of the epiphyses of bones.
Others: polycythemia, inflammation and tenderness at the injection site.