Final answer:
Finasteride is used to treat benign prostatic hyperplasia (BPH) and male pattern hair loss. It is a 5-alpha-reductase inhibitor drug.
Step-by-step explanation:
Finasteride is used to treat a condition called benign prostatic hyperplasia (BPH) or enlarged prostate. It is also used to treat male pattern hair loss. Finasteride belongs to the drug category known as 5-alpha-reductase inhibitors, which work by blocking the conversion of testosterone to dihydrotestosterone (DHT).
Learn more about Finasteride: Uses and Drug Category