Viagra side effects.

List of 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 hearing

changes in vision, blurred vision, trouble telling blue from green color

chest pain

fast, irregular heartbeat

men: prolonged or painful erection (lasting more than 4 hours)

seizures

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

diarrhea

flushing

headache

indigestion

stuffy or runny nose

This list do not describe all possible side effects. Call your doctor for medical advice about any kind of side effects.

How should I keep my medicine? Keep it out of reach of children. Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.