About dutasteride
5-alpha-reductase inhibitor
Used for
- Treats symptoms of an enlarged prostate (benign prostatic hyperplasia).
- May reduce the risk of urinary retention and prostate surgery.
Usual adult dose
0.5 mg by mouth once daily, with or without food.
Common side effects
- Reduced sex drive or difficulty getting an erection
- Ejaculation problems or reduced semen volume
- Breast tenderness or enlargement
- Dizziness
Important warnings
- Not for use by women or children; leaking capsules can harm a developing male fetus.
- Do not donate blood during treatment or for 6 months after stopping.
- May lower prostate-specific antigen (PSA) levels and affect prostate cancer screening.
- Liver disease may increase dutasteride exposure.
Pregnancy
Contraindicated in pregnancy; exposure may harm development of a male fetus.
Breastfeeding
Not indicated for women; safety during breastfeeding is not established.
Interactions
- Strong CYP3A4 inhibitors, such as ritonavir, may increase dutasteride levels.
- Other medicines affecting CYP3A4 may alter dutasteride levels.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.