Finasteride is in a class of medications called 5-alpha reductase inhibitors. Finasteride treats BPH by blocking the body's production of a male hormone that causes the prostate to enlarge. Finasteride treats male pattern hair loss by blocking the body's production of a male hormone in the scalp that stops hair growth.
It is a specific inhibitor of 5 alpha-reductase, an intracellular enzyme that converts testosterone into the highly potent 5 alpha-dihydrotestosterone which appears to be the principal androgen responsible for stimulation of prostate growth.
It is a specific inhibitor of 5 alpha-reductase, an intracellular enzyme that converts testosterone into the highly potent 5 alpha-dihydrotestosterone which appears to be the principal androgen responsible for stimulation of prostate growth.
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