Additionally, men with cardiovascular disease or diabetes might require closer observation and dosage adjustments. What is Levitra taken for? Normally, your doctor will recommend a starting dose of 10mg. Always read the instruction leaflet carefully before beginning Levitra. In most instances, men use Levitra if they have difficulties getting or maintaining an erection for sexual intercourse. Brand-name medications such as Levitra are typically more expensive , and you can save significantly more by switching to generic. When you get sexually aroused, signals are sent to the blood vessels in your penis, which relax and dilate.It should start to work in minutes so long as you are sexually stimulated. Levitra should remain active in your system for up to five hours. Make sure . Levitra takes about 30 minutes to start working and the effects last a little longer than Viagra, about 5 hours. Staxyn dissolves in your mouth. It contains the same active . Vardenafil can typically work to help an erection occur and last longer for anywhere between 5 to 7 hours. In one study, people who took vardenafil reported that it .