Finasteride belongs to a group of medications known as 5-alpha-reductase inhibitors. Finasteride is used to treat benign prostatic hyperplasia (BPH), also known as enlarged prostate. Finasteride can be used alone or in combination with another medication called doxazosin (an alpha blocker). These medications may be taken together to reduce the progress of your BPH symptoms. If you are taking this combination, be sure to also read the patient information for doxazosin.
This medication improves the symptoms associated with BPH, such as decreased urine flow, difficulty urinating, getting up to urinate during the night, or hesitation at the start of urination. It may take 6 months or more to see the full effects of finasteride. Finasteride reduces the likelihood of prostate surgery for men with BPH. Finasteride must be taken on a regular basis to be effective.