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Viagra is a drug used to treat erectile dysfunction. Discovered by accident, the blue diamond-shaped oral pill Viagra was originally intended for treating high blood pressure but its testers found an interesting side effect. Viagra was made in 1996 in a lab located in England and patented in 1998. Viagra’s real name is Sildenafil Citrate and goes by the trade names such as Viagra and Revaltio. It was finally approved for use by the Food and Drug Administration in 1998. Annual sales of Viagra exceed $1 billion in the United States and Viagra currently dominates the market for erectile dysfunction treatments by 92%. The chemical makeup of Viagra is C22H30N6O4S and is available by prescription only, although recently the creator is attempting to make Viagra available over-the-counter in England. Viagra is marketed by the pharmaceutical company Pfizer. Viagra works by inhibiting an enzyme found in the blood flow of the penis and relaxing the smooth muscle, allowing blood to flow and causing the erection. Major uses for the drug Viagra include sexual dysfunction, pulmonary arterial hypertension, altitude sickness, and recreational uses. Some athletes believe the extra blood flow will improve performance. Viagra is very popular in popular culture and often comes with myths about the positive effects of the drug. Being a successful treatment of erectile dysfunction, it is often believed that use of the drug will result in increase libido and sexual performance. This is not true, and studies using a placebo show the value of the human mind in believing these myths.
Side effects include headache, nausea, nasal congestion, and vision problems. There are a few serious side effects from using Viagra and although rare, should be noted: more serious vision problems, hypertension, heart attack, stroke, and sudden hearing loss. These risks are required to be on the labeling of Viagra packets as of 2007.