What are Proscar (finasteride) side effects?

The most common Proscar side effects include: 

• Erectile dysfunction (inability to get or maintain an erection)
• Abnormal ejaculation
• Low sex drive
• Pain in the testicles
•  Depression

Proscar side effects may get better over time as the body gets used to the medicine. However, if the side effects are severe or do not go away, please contact your healthcare provider. 

Some Proscar side effects are more serious. Call your doctor immediately if you experience the following signs and symptoms:

• Enlarged breasts, tender breasts, lumps in the breasts, nipple discharge
• Rash, hives, itching
• Swelling of the lips or face
• Difficulty breathing or swallowing

The above list may not include all potential Proscar side effects. Talk to your doctor if you have any unusual adverse effects after taking this medicine or the side effects do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Proscar overdose: Taking one extra dose of Proscar by mistake is unlikely to be harmful. If you have taken an overdose of this medication, call your doctor or pharmacist immediately or call the poison control helpline on 1-800-222-1222. 

Note: Proscar is a prescription medicine intended to be used only by you—never share your medicine with others or use someone else’s Proscar

Source: FDA