Erectile Dysfunction is a physical disorder that affects one in four males. It occurs when the penis cannot become or stay erect and is caused by various psychological and physical issues. While this physical disorder is difficult to openly discuss, some 5% of 40-year-old males and 25% of 65-year-old males are known to have erectile dysfunction happen to them at some point in their lives. Medical experts provide support by testing and treatment to help men improve their sex lives. Vardenafil, a drug specifically designed for this purpose, is co-marketed by pharmaceutical companies, Bayer, GlaxoSmithKline and Schering-Plough.
Vardenafil is sold under the trade name Levitra and like Viagra and Cialis it works by preventing the PDE5 enzyme from controlling blood flow into the penis, thus causing an erection and preventing erectile dysfunction. If you look at the structure of the drug, it is different from that of Sildenafil because of the placement of the nitrogen atom and the piperazine ring of sildenafil changing into an ethyl group from a methyl group. Tadalafil is structured differently from similar drugs, while Vardenafil is known to have the shortest duration of potency when compared to other drugs designed to prevent erectile dysfunction.
Levitra shares some of the side effects associated with using erectile dysfunction drugs, including pains in the abdomen, back and muscle; palpitations, nausea, hypotension, rashes, itching, abnormal vision and priapism. While the following side effects are rare, the drug has been documented as causing heart attacks and might damage tissue around the penis, possibly making impotence permanent.