Trusted Prescription Drug Information

• If you experience any of the following serious side effects, stop taking viagra and seek emergency medical attention or notify your doctor immediately:
· an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
· chest pain or an irregular heartbeat;
· swelling of the ankles or legs;
· shortness of breath;
· prolonged or severe dizziness;
· a prolonged (lasting longer than 4 hours) or painful erection; or
· dizziness, nausea, or angina (pain, tightness, discomfort, numbness, or tingling in the chest, arms, neck, or jaw).
• Other, less serious side effects may be more likely to occur. Continue to take sildenafil and talk to your doctor if you experience
· flushing;
· mild dizziness;
· headache;
· nasal congestion;
· diarrhea;
· temporary blue tint in vision or other vision abnormalities; or
· itching or a rash.
• Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.