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Side effects
Viagra (Sildenafil Citrate) Common Side effects
Tell your doctor or pharmacist if any of the following occurs: headache, flushing, stomach upset or nausea, heartburn, stuffy or runny nose, diarrhea, dizziness, or lightheadedness. An allergic reaction to this medicine is unlikely but seek im-mediate medical attention if it occurs. Symptoms of an allergic reaction include rash, itching, unusual swelling, severe dizziness, or trouble breathing
A small number of men have lost eyesight in one eye some time after taking Viagra. This type of vision loss is called non-arteritic anterior ischemic optic neu-ropathy (NAION). NAION causes a sudden loss of eyesight because blood flow is blocked to the optic nerve.
We do not know at this time if Viagra causes NAION. NAION also happens in men who do not take these medicines. People who have a higher chance for NAION include those who:
- have heart disease
- are over 50 years old
- have diabetes
- have high blood pressure
- have high cholesterol
- smoke
- have certain eye problems
Stop using Viagra if you have a loss in your eyesight. Get medical help right away.
Side effects Viagra - more info
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