This registry is a place to share positive or negative side effects of using Viagra. If you directly experienced a side effect while using Viagra, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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November 15th
2006
10:40 PM
viagra can cause headache, one of ten men in tbe clinical trials developed blinding headaches that grew more severe at higher doses.
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