Erectile dysfunction is a very common disorder that affects millions of men worldwide. The problem involves the inability to maintain an erection for long enough to engage in sexual intercourse. Fortunately, there are many effective treatment options available, including Levitra. Following the tremendous success of Viagra, Levitra appeared on the market to help men suffering from male impotence. Levitra works by increasing blood flow to the penis which helps men achieve and sustain an erection during sexual intercourse. The drug begins to work in 15 to 16 minutes, with results lasting 4 to 5 hours. If you are tired of suffering from erectile dysfunction, be sure to try Levitra!