Cialis (tadalafil) is produced and marketed by the Eli Lilly company. This medicine is used to treat male impotence, or erectile dysfunction. In most cases men being treated for erectile dysfunction are prescribed the 10 mg dose that should be taken when needed. Taking a double dose or using Cialis more often than once every 24 hours will not produce better results and can worsen some of the side effects. Do not follow the example of some people who believe all the meds should be stored in the freezer – just keep Cialis in a cool dark place where it will not be accessed by people to whom is was not prescribed. If you are allergic to Cialis but decide to take it anyway the following symptoms may be experienced: trouble breathing, swelling of your face, throat, tongue or lips and hives. Report an allergic reaction immediately to your local emergency room and get help to make sure this reaction does not get more severe.

Older people (over 65) may be required a lower dose of this medicine. However, every person must visit a health care provider to talk about their health condition and discuss the dosage based on a number of important factors. If your erection does not go away after you have completed sexual intercourse, this may mean you have a rare but dangerous side effect – priapism. Priapism is a prolonged erection that is painful and can result in permanent damage to the tissue of your penis. Cialis side effects are generally mild and short-lived. They include but are not limited to indigestion, cough, diarrhea, flushing, heartburn, and muscle pain.