The little blue pill has become a standard feature of many people's sex lives. But here are some things you may not know.
1. Launched by Pfizer in 1998, the blue diamond-shaped tablets (which have the chemical name sildenafil) rapidly became the fastest-selling drug in history. Roughly 1 billion Viagra tablets have been doled out since the drug debuted.
2. Viagra will cause erection only if you are sexually aroused by your partner, hence the inexorable rise of the Viagra divorce when men who get their mojo back trade in the missus for a 25-year-old.
3. Too embarrassed to go to your doctor? You can get five blue pills at Edrugstore without a prior prescription if you fill out an online medical questionnaire.
4. Viagra was also tested in about 3,000 women as a potential treatment for sexual arousal disorders. But the trials were "inconclusive," and Pfizer announced in 2004 that it had stopped them.
5. Swallowing your pills with grapefruit juice may cause a modest increase in the blood level of sildenafil, the active ingredient in Viagra. Alternatively, red watermelon contains citrulline, which the body converts to arginine, a chemical that boosts nitric oxide and relaxes the blood vessels in the same way as Viagra. In Italy, scientists have discovered that icariin, a compound found in the herb horny goat weed, has the potential to compete with Viagra.
6. The most common side-effects associated with Viagra are headache, flushing, dizziness palpitations, indigestion and blurred or blue- tinged vision. In 2005 and 2007 the US Federal Drugs Adminsitration instructed Pfizer to advise users of the risk of blindness and deafness. Viagra can be fatal if used in combination with nitrates, the drugs prescribed to treat heart problems such as angina. For a detailed list of side effects www.rxlist.com/viagra-drug/ article.htm#ad.
7. Viagra is being linked to male infertility. Dr David Glenn, a consultant gynaecologist at Queen's University Belfast, has discovered that exposure to Viagra damages sperms' ability to penetrate and fertilise the egg.
8. Sextasy, Poke, Vitamin V - on the club circuit Viagra is taken to counterbalance drugs such as cocaine, crack and ecstasy, which inhibit erection. However, mixing “poppers” (amyl nitrate) with Viagra can lead to a drastic drop in blood pressure causing stroke, heart attack or death.
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