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| Pfizer received FDA approval for Viagra in 1989. Scientific research recently identified three new risks connected with Viagra use. The University of Minnesota published evidence linking Viagra to. They are permanent vision loss, interruption of the electrical pacing of the heart and elevated clotting factor. Pfizer claims 30 million users to date. Viagra labeling addresses risks connected with vision impairment, dangerously low blood pressure when taken with nitrites and hearing loss. There are less than 100 cases of Viagra induced permanent blindness. These warnings are on the package labeling. Post heart attack men are in a dangerously high risk group. The last two have caused death by cardiac arrest and heart attack (myocardial infarction). Some scientists recommend post heart attack men not use Viagra. There are less than 7,000 cases of cardiac death connected with Viagra use. Risks are elevated for men with heart disease, high blood pressure, diabetes, high cholesterol and high lipoprotein levels. The FDA clinical trials identified a temporary vision impairment side effect related to light sensitivity and blue, green color distortion. Viagra's interaction with statin drugs are a problem, especially for men with heart disease. This product generated a two billion dollar market for treatment of erectile dysfunction (ED). _ |
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