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It produces positive results and people forget forever the term impotence or erectile dysfunction It is better for men to take light meal on the day when they plan to take Viagra. Heavy meal before sexual activity may produce less effects of Viagra. This drug takes about an hour to show effects and they may last up to four hours. Its Side effects The most common side effects, which are visible among men who buy Viagra for treating impotence or erectile dysfunction, are facial flushing and mild headache. Some people may even complain of indigestion and blue tint to the vision but the number of such men is very less. But it is always better for men to consult a doctor before they buy Viagra. fda viagra viagra sale no prescription viagra substitue cialis prescribing cheaper cialis levitra viagra
