Levitra (vardenafil hydrochloride) is a medicine efficient in the treatment of erectile dysfunction – a condition that is often diagnosed in males in spite of their age. However, before using this drug make sure you talk to your doctor and tell him about any possible risk factors you may have. The following medical conditions are risk factors for using Levitra: recent history of stroke or blood clots, high or low blood pressure, blood cell disorder, liver disease, bleeding disorder, kidney disease, physical deformity of the penis, retinitis pigmentosa, recent history of a heart attack, heart disease or heart rhythm problems, family history of Long QT syndrome, and stomach ulcer. Any of them may require a dose adjustment or your doctor will need to monitor you for side effects throughout the entire period of the treatment. Let your doctor know if you are taking or are planning to take drugs for prostate disorder, antidepressants, heart or blood pressure medications, antibiotics, drugs to treat high blood pressure, antifungal medications, heart rhythm medicines, or any other products, as interactions are possible. Levitra mild side effects include heartburn, upset stomach, flu-like symptoms, headache, flushing, and stuffy or runny nose. They will most probably go away on their own.