Propecia (Finasteride): Side Effects, Risks & What to Know

Finasteride (Propecia) is generally well-tolerated, but like all medications it can cause side effects. The most common side effects of finasteride are:

* Sexual side effects: These include decreased libido (sex drive), erectile dysfunction, and ejaculation problems. These side effects occur in about 1 in 10 men taking finasteride.

* Mood changes: These include depression and anxiety. These side effects occur in about 1 in 100 men taking finasteride.

* Other side effects: These include rash, itching, hives, and swelling of the lips, face, tongue, or throat. These side effects are rare.

Finasteride can also interact with other medications, so it's important to tell your doctor about all of the medications you're taking before starting finasteride.

In general, finasteride is a safe and effective medication for treating hair loss. However, it's important to weigh the risks and benefits of finasteride before deciding whether to take it.