Oxymetholone is the only DHT derivative with estrogen side effects. Oxymetholone is a DHT derivative. To the best of our knowledge, DHT derivatives are not substrates for aromatase and, therefore, do not bind to aromatase to produce estrogen. However, oxymetholone is an exception, and taking oxymetholone may cause estrogenic side effects that are different from all other DHT derivatives. For …