Oxymetholone (also known as anapolon or anadrol) is a very drastic synthetic steroid, 17-alpha-alkylated modification of dihydrotestosterone. It was developed for the treatment of osteoporosis and anaemia, as well as to stimulate muscle gain in malnourished and debilitated patients. Oxymetholone has been approved by the American Food and Drug Administration (FDA) for use in humans. Later there where created non-steroidal drugs that effectively could treat anaemia and osteoporosis; because of this anapolon lost his popularity and by 1993 Syntex decided to cease the production of the drug, as well as other manufacturers did.
The most common daily dose of Anapolon is 100mg, but even at that dosage side-effects like water-retention, elevated blood pressure, acne, hair loss, blood clotting changes, gynocomastia, liver toxicity and mood swings are very often reported. Using aromatase inhibitors to control estrogen aromatization will be ineffective as this drug does not directly convert into estrogen. It was suggested that oxymetholone can activate the estrogen receptor, similar to, but more profoundly than the estrogenic androgen methandriol. Supplements like Milk Thistle can be taken to help keep liver enzyme levels between safe ranges.