Viagra is an effective ED medication. You need to discuss with your doctor all the medical conditions you have that may potentially interfere with your treatment. These include a stomach ulcer, kidney disease, a blood cell or bleeding disorder, coronary artery disease, a history of a stroke, heart attack, abnormal blood pressure. One or several of these conditions may be a contraindication or a dose adjustment will be required. The doctor will assess your health condition and make sure it is safe for you to have sex and take Viagra to treat erectile dysfunction.
You mustn't take Viagra simultaneously with nitrates - drugs commonly used to treat chest pain or heart problems. Simultaneous use may cause a decrease in blood pressure and lead to a heart attack. The decrease of blood flow to the optic nerve is a rarely reported side effect which may or may not be linked to taking Viagra. This side effect occurred in patients older than 50 who also were regular smokers, had high levels of cholesterol, high blood pressure, heart disease or diabetes, and reported eye problems before starting the treatment. Do not share Viagra with other people - although their symptoms may be identical to the ones you have, taking this drug without previously consulting a doctor is fraught with serious health consequences.