The hormonal drug Proviron has a mild androgenic effect dependent on the active agent Mesterolone. Upon consuming potent AAS, the drug allows users to easily restore hormonal levels.

The drug is used in medicine to improve sperm count, compensate for the loss of testosterone, boost libido, and promote erythropoiesis. Proviron also acts as an antidepressant and reduces anxiety and depression symptoms substantially.
Thanks to the small number of side reactions and low levels of toxic effects, the medication has become common in sports. Proviron is widely used by athletes during steroid cycles to reduce aromatization due to its ability to increase testosterone levels and inhibit globulin activity. PCT may also be done with the drug to restore the endocrine profile.