How Viagra and Levitra Work
Viagra was developed in the early 1990s in England. It was approved by the FDA in 1998. It is also known by its generic name of sildenafil citrate. Originally, researchers were looking for a new heart drug and quickly became aware that the substance they had produced helped some men get an erection. Quite quickly, Viagra became one of the best known drugs in the world.
Levitra works in a similar way to Viagra and its generic name is vardenafil. By enabling the muscles to relax around the penis, blood flow is increased leading to an erection when a man is in an aroused state of mind. Levitra was developed by the pharmaceutical giant Bayer, SmithKlineGlaxo.
Viagra and Levitra work by allowing the blood flow to the penis to increase so that an erection can occur. It is not muscle movement that causes the penis to become erect, but rather pressure from inreased blood flow to the penis. If this flow is interrupted the penis cannot achieve full erection and this leads to the condition we know as erectile dysfunction. The arteries that bring blood flow to the penis become constricted (tighten up) due to a variety of other medical conditions. Some of the most common are cardiac disease, diabetes, depression and high cholesterol.
In the U.S. there are millions of men who experience erectile dysfunction. In fact it is estimated that 80% of previously sexually active men will experience the inability to get an erection at least once in their lives. If erectile dysfunction is impacting you or someone you love, one of these drugs may help. Lack of sexual contact in a relationship is one reason for relationship breakdown. This website provides you with important links to Viagra and Levitra information to help you make an online purchase with confidence. Visit your doctor soon to be sure that one of these erectile dysfunction drugs is suitable for you.
