ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.
Overview
It takes 3 to 6 months to work.
What it's used for
- Enlarged prostate (BPH)
How to take it
- Swallow capsules whole, with or without food.
- Women who are or may become pregnant shouldn't handle leaking capsules.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Lower sex drive
- Erection problems
- Less semen
- Breast tenderness
Call your provider todayBreast lumps, pain, or nipple discharge
Call 911Swelling of the face, lips, or throat, hives, or trouble breathing
Warnings
- It lowers PSA results; tell anyone checking your PSA.
- Don't donate blood while taking it and for 6 months after.
Other medicines, foods, and alcohol
- Ketoconazole and ritonavir may raise its level.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Not for use by women. It can harm a male baby.
Missed doses, overdose, and storage
If you miss a dose
Take it as soon as you remember, unless it's almost time for your next dose. Then skip the missed dose. Don't take two doses at once.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Dutasteride (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.