Prescription
5-alpha reductase inhibitor (hormone blocker for prostate and hair loss)
Finasteride
Last reviewed April 2026
Who is this for?
What is this drug?
Finasteride is a drug that works by blocking the conversion of the male hormone testosterone into a stronger form called DHT, which is responsible for prostate enlargement and hair loss in men.
What is it used for?
Enlarged prostate (difficulty urinatingfrequent urination especially at night)male pattern baldness (hair loss on top of the head)
Prescription Required
A doctor's prescription is required to obtain this drug legally.