Cialis is a phosphodiesterase inhibitor widely used for the treatment of impotence. This medicine has been nicknamed "a weekend pill" due to the 36-hour long efficiency. You need to talk to your doctor about your current health condition before taking Cialis. Tell your health care provider about any other medications you are taking to avoid drug interaction that may not only decrease the effectiveness of Cialis but also cause more serious health problems. Side effects of Cialis include diarrhea, upset stomach, back or muscle pain, sore throat, stuffy nose, warmth in your head neck or face. These side effects are likely to go away on their own in a couple of hours. The use of alcohol may worsen some of the symptoms.
If you are taking such drugs as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, or amyl nitrate, it's not recommended to take Cialis. Drug interaction may result in fainting, stroke or heart attack. In rare cases the patients reported priapism - a long (more than 4 hours) and painful erection that may damage the penis. It is not recommended to take other drugs used for the treatment of impotence, such as alprostadil and yohimbine, while you are taking Cialis.