Levitra.

Levitra (vardenafil) is a prescription phosphodiesterase inhibitor that works to improve erections by preventing the blood from escaping back into the body. It is supposed to be taken as needed but not more often than every 24 hours. Your doctor needs to know if you have ever been allergic to any medications, or if you are using any nitrate based drugs - isosorbide dinitrate, amyl nitrate, nitroglycerin, isosorbide mononitrate, or butyl nitrate, as those may be contraindications for taking Levitra. To make sure your treatment is efficient your doctor will need to take into consideration any medical conditions you have, especially any of the following ones: heart disease, high or low blood pressure, kidney disease, liver disease, congestive heart failure, chest pain, a history of stroke or blood clots, retinitis pigmentosa, blood cell disorder, physical deformity of the penis, bleeding disorder, stomach ulcer, or a recent history of a heart attack. Levitra can cause mild side effects – such as flushing, flu-like symptoms, heartburn, stuffy or runny nose, upset stomach, and headache, but they are unlikely to last for too long and you do not need to report them to your health care provider.