Halotestin®, brand of Fluoxymesterone tablets, is an anabolic steroid, a synthetic derivative of testosterone. Each tablet contains 10 mg of Fluoxymesterone USP29, micronized grade. It is designated chemically as 9α-Fluoro-11β, 17β-dihydroxy-17α-methylandrost-4-en-3-one.
It occurs as white or practically white, odourless, crystalline powder. Practically insoluble in water; sparingly soluble in alcohol; slightly soluble in chloroform.
Each tablet also contains lactose monohydrate, sodium starch glycolate, polyvidone 25,000, microcrystalline cellulose and magnesium stearate as excipients and also contains yellow ferric oxide (E172) and indigo carmine aluminium lake (E132) as colouring agent.