Proviron is a synthetic, orally effective androgen which does not have any anabolic characteristics. Proviron is used in school medi-cine to case or cure disturbances caused by a deficiency of male sex hormones. Many athletes, for this reason, often use Proviron at the end of a steroid treatment in order to increase the reduced testoster-one production. This, however, is not a good idea since Proviron has no effect on the body’s own testosterone production but-as men-tioned in the beginning-only reduces or completely eliminates the dysfunctions caused by the testosterone deficiency. These are, in par-ticular, impotence which is mostly caused by an androgen deficiency that can occur after the discontinuance of steroids, and infertility which manifests itself in a reduced sperm count and a reduced sperm quality. Proviron is therefore taken during a steroid administration or after discontinuing the use of the steroids, to eliminate a possible impotency or a reduced sexual interest. This, however, does not con-tribute to the maintenance of strength and muscle mass after the treatment. There are other better suited compounds for this (see HCG, Clomid, and Teslac). For this reason Proviron is unfortunately considered by many to be a useless and unnecessary compound.