What side effects may I notice from receiving Revatio?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-breathing problems
-changes in vision
-chest pain
-decreased hearing
-fast, irregular heartbeat
-men: prolonged or painful erection (lasting more than 4 hours)

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-facial flushing
-headache
-nosebleed
-trouble sleeping
-upset stomach

This list may not describe all possible side effects for Revatio. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.