Finasteride Dosage

This dosage information may not include all the information needed to use Finasteride safely and effectively. See additional information for Finasteride.

The information at is not a substitute for medical advice. ALWAYS consult your doctor or pharmacist.

Usual Adult Dose for:

Additional dosage information:

Usual Adult Dose for Benign Prostatic Hyperplasia

5 mg orally once a day.

Patients should be evaluated for efficacy after 6 to 12 months. If after this time there is no improvement, finasteride should be discontinued. Doses greater than 5 mg/day do not result in increased dihydrotestosterone suppression and should not be used.

Several long-term studies (up to ten years) have concluded that finasteride leads to durable improvement in urinary tract symptoms, flow rate, and prostate volume.

Usual Adult Dose for Androgenetic Alopecia

For the treatment of male pattern hair loss (androgenetic alopecia) in men only . (Safety and efficacy have been demonstrated in men between 18 to 41 years of age with mild to moderate hair loss of the vertex and anterior mid scalp area.):

Recommended Dosage: 1 mg once a day.

In general, daily use for three months or more is necessary before benefit is observed. Continued use is recommended to sustain benefit. Withdrawal of treatment leads to reversal of effect within 12 months.

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available


Finasteride should be used with caution in patients with hepatic impairment.

Safety and effectiveness have not been established in pediatric patients (less than 18 years of age).


Data not available

Other Comments

May be administered with or without meals.