Side effects of Viagra Stop using sildenafil and

Stop using sildenafil and call your doctor at once if you have a serious side effect such as:

• sudden vision loss;


• ringing in your ears, or sudden hearing loss;


• chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;


• irregular heartbeat;


• swelling in your hands, ankles, or feet;


• shortness of breath;


• vision changes;


• feeling light-headed, fainting; or


• penis erection that is painful or lasts 4 hours or longer.

Less serious side effects may include:

• warmth or redness in your face, neck, or chest;


• stuffy nose;


• headache;


• memory problems;


• upset stomach; or


• back pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.