Testosterone is an androgen hormone which regulates the development of the male reproductive system and male secondary sex characteristics (such as facial hair).
Testosterone regulation involves using drugs called gonadotropin-releasing hormone agonists to reduce the amount of testosterone in the body.
There are several different gonadotropin-releasing hormone agonists, each of which is marketed under a variety of brand names. For example, in the UK, leuprolide is marketed as Prostap. In the USA Leuprolide is marketed by Bayer AG under the brand name Viadur, by Sanofi-Aventis under the brand name Eligard, and by TAP Pharmaceuticals under the brand name Lupron.
There are several different gonadotropin-releasing hormone agonists, each of which may be administered in different ways. For example, according to MedlinePlus (2011),
“Leuprolide injection comes as a long-acting suspension (Lupron) that is injected intramuscularly (into a muscle) by a doctor or nurse in a medical office or clinic and is usually given once a month (Lupron Depot, Lupron Depot-PED) or every 3, 4, or 6 months (Lupron Depot-3 month, Lupron Depot-PED-3 month, Lupron Depot-4 month, Lupron Depot-6 Month). Leuprolide injection also comes as a long-acting suspension (Eligard) that is injected subcutaneously (just under the skin) by a doctor or nurse in a medical office or clinic and is usually given every 1, 3, 4, or 6 months.”
There are several different gonadotropin-releasing hormone agonists, each of which may be available in different doses.
For the latest information on specific formulations please see the British National Formulary (BNF).