Erectile dysfunction (also called
impotence or just
ED) is a condition in which a man is consistently unable to sustain an erection that is firm enough for sexual intercourse.
Cialis® (
tadalafil) is often used to treat this problem. It comes in tablet form, and can be taken either as needed or once a day.
Most men have no problems with Cialis; however, adverse reactions are possible. In clinical studies, commonly reported side effects included
headache, indigestion, and
back pain. Such reactions are usually mild -- if they even occur -- and are easily treated.
In some cases, Cialis can cause serious problems. For example, if you experience a painful erection that lasts more than six hours, or if you experience signs of an allergic reaction to Cialis (such as trouble breathing or swallowing), you should seek medical attention right away.
(Click Cialis Side Effects and Cialis Precautions and Warnings to learn more about potential problems with Cialis. These articles describe potentially serious drug reactions that require medical care, who should avoid this product completely, and what you need to tell your doctor before taking it.)