Levitra belongs to a class of medicine called phosphodiesterase inhibitors. Levitra relaxes muscles in the wall of blood vessels and increases blood flow to a particular body area. Levitra works by increasing blood flow to the penis during sexual stimulation. Some medicines can cause unwanted or dangerous effects when used with Levitra.  If you are allergic then you should contact your doctor and then use. Do not take Levitra if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as “poppers” . Taking Vardenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Levitra has some side effects. Before using Levitra you can consult your doctor. The main side effects like heart disease, heart attack stroke, congestive heart failure, high or low blood pressure, and many more, so without doctors' permission you can not use it. it may be harmful to us. 

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