Finasteride is a medication primarily used to treat male pattern hair loss (androgenetic alopecia) and benign prostatic hyperplasia (BPH), a condition where the prostate gland enlarges and causes urinary problems.
Finasteride works by inhibiting the enzyme 5-alpha-reductase, which converts testosterone into dihydrotestosterone (DHT). DHT is a hormone that contributes to hair loss and prostate enlargement. By reducing DHT levels, finasteride helps to slow down hair loss and promote hair regrowth in men with male pattern baldness. It also helps to shrink the enlarged prostate gland, relieving urinary symptoms associated with BPH.
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