Finasteride vs dutasteride: How do sexual side effects and fertility concerns compare?

Finasteride and dutasteride can both cause sexual side effects. These include lower sex drive, trouble getting or keeping an erection, and changes in ejaculation or semen volume. Breast tenderness or enlargement can also occur. Tell your physician about symptoms you already have before starting either medicine.

Sexual symptoms that continue after stopping have been reported with these drugs. It is not always clear what caused the symptoms or how long they may last. Do not assume that switching between the two will remove this risk. Dutasteride remains in the body much longer than finasteride, so stopping it does not quickly end exposure.

Both medicines may affect semen quality. This does not mean everyone who takes them will have trouble having children. If you are trying to conceive, have had a low sperm count, or are receiving fertility care, discuss that before treatment.

A licensed physician in your state can help weigh these concerns against your treatment goals. Contact your prescriber if sexual symptoms develop. Report a breast lump or nipple discharge promptly rather than waiting for your next routine visit.