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History OF VIAGRA At first, Viagra was worked by Pfizer specialists working in the U.K. They were, in all validness, dealing with a solution for hypertension, or hypertension, and angina pectoris, an indication of ischemic coronary ailment. Amidst the stage 1 stray pieces, it was seen that the remedy neared no to execute angina yet incited checked penile erections. Hitting the market in 1998, Viagra was the standard oral.