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Fenobolin: Full Drug Profile

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

Fenobolin - General Information

C18 steroid with androgenic and anabolic properties. It is generally prepared from alkyl ethers of estradiol to resemble testosterone but less one carbon at the 19 position.

 

Pharmacology of Fenobolin

Fenobolin is an anabolic steroid occurring naturally in the human body, albeit in small quantities. Fenobolin increases production and urinary excretion of erythropoietin. It may also have a direct action on bone marrow. Fenobolin binds to the androgen receptor to a greater degree than testosterone, but due to its inability to act on the muscle in ways unmediated by the receptor, has less overall effect on muscle growth.

 

Additional information about Fenobolin

Fenobolin Indication: For the treatment of refractory deficient red cell production anemias, breast carcinoma, hereditary angioedema, antithrombin III deficiency, fibrinogen excess, growth failure and Turner's syndrome. It is also indicated in the prophylaxis of hereditary angioedema. Mechanism Of Action: Fenobolin is an androgen receptor agonist. Drug Interactions: Not Available Food Interactions: Not Available Generic Name: Nandrolone Synonyms: Nadrolone Phenylpropionate; Nandrolon Phenylpropionate; Nandrolone Phenylpionate; Nandrolone Phenylpropionate; Nortestosterone Phenylpropionate; Norandrostenolone Phenylpropionate; Norandrolone Phenyl Propionate; NPP; NTPP; Testosterone Phenylpropionate; 19NTPP; Nandrolin Drug Category: Anabolic Agents Drug Type: Small Molecule; Illicit; Approved Other Brand Names containing Nandrolone: Activin; Durabol; Durabolin; FTS; Fenobolin; Nandrobolic; Nerobil; Nerobiolil; Nerobolil; Phenobolin; Strabolene; Superanabolon; Deca-Durabolin; Absorption: Not Available Toxicity (Overdose): Not Available Protein Binding: 58% Biotransformation: Nandrolone is unusual in that unlike most anabolic steroids, it is not broken down into the more reactive DHT by the enzyme 5α-reductase, but rather into a less effective product known as Dihydronandrolone. Half Life: Not Available Dosage Forms of Fenobolin: Liquid Intramuscular Chemical IUPAC Name: (8R,9S,10R,13S,14S,17S)-17-hydroxy-13-methyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one Chemical Formula: C18H26O2 Nandrolone on Wikipedia: https://en.wikipedia.org/wiki/Nandrolone Organisms Affected: Humans and other mammals