Bolandione

Until 2005, bolandione was available without prescription in United States, where it was marketed as a prohormone, but it is now classified as a Schedule III drug.

[1] Bolandione is readily metabolized to nandrolone after oral administration, but its potency to transactivate the androgen receptor dependent reporter gene expression is 10 times lower as compared to dihydrotestosterone (DHT).

[2] Scientific studies have shown that oral administration of bolandione is "a very ineffective strategy for stimulating skeletal muscle mass increases but may be associated with side effects".

[3] In vivo experiments in castrated rats demonstrated that subcutaneous treatment with bolandione resulted only in a stimulation of the weight of the levator ani muscle, while the prostate and seminal vesicle weights remained completely unaffected.

In contrast to its metabolite nandrolone, bolandione highly selectively stimulates the growth of the skeletal muscles but has only weak androgenic properties.