What are the possible side effects of vardenafil?
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If you experience any of the following serious side effects, stop taking vardenafil and seek emergency medical attention or contact 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 heartbeats;
» swelling of the ankles or legs;
» shortness of breath;
» prolonged or severe dizziness;
» fainting;
» a prolonged (lasting longer than 4 hours) or painful erection;
» dizziness, nausea, or angina (pain, tightness, discomfort, numbness, or tingling in the chest, arms, neck, or jaw);
» or back pain.
Other, less serious side effects may be more likely to occur. Continue to take vardenafil and talk to your doctor if you experience
» flushing;
» mild dizziness;
» headache;
» nasal congestion;
» stomach upset;
» sensitivity of the eyes to light;
» or temporary blue tint in vision or other vision abnormalities
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.