Oxymetholone, marketed as Anadrol and Anapolon, is a synthetic anabolic steroid developed in 1960 by Zoltan 'Anadrol Z' F. Its primary clinical applications include treatment of osteoporosis and anaemia, as well as stimulating muscle growth in malnourished or underdeveloped patients. The drug was approved for human use by the FDA. Later, non-steroidal drugs such as epoetin alfa were developed and proven to be more effective as a treatment for anaemia and osteoporosis without the side effects of oxymetholone. The drug remained available despite this and eventually found a new use in treating HIV wasting syndrome. Presented most commonly as a 50 mgtablet, oxymetholone is one of the strongest androgenic steroids available. Similarly, there is a risk of side effects. Despite very low binding affinity with the androgen receptor, oxymetholone is highly effective in promoting extensive gains in body mass, mostly by greatly improving protein synthesis. For this reason, it is often used by bodybuilders and athletes. Many athletes also use oxymetholone as a method of protection for the joints under heavy loads. Oxymetholone is widely considered by bodybuilders to have the strongest anabolic effect out of all oral steroids available.
To further its effectiveness as an anabolic agent, bodybuilders typically "stack" oxymetholone with other anabolic steroids. Since it is already a very potent androgen, many users will only use it for the first 3-4 week of the cycle, giving time for intra-muscularly injected products such as nandrolone, boldenone and testosterone to reach maximum blood levels.
^"Anadrol-50". Meda Pharmaceuticals. December 2006. Retrieved 8 January 2012.