There are some side effects which can be observed when taking Cialis. Thus you are to ask for emergency medical help if you are observing any of such signs of allergic reaction as hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Also you are to contact the doctor if during the intercourse you start feeling dizzy or nauseated, start having pain, numbness, or tingling in your chest. Note! You are to stop taking Cialis immediately and contact the doctor once you appear to have:

• sudden vision loss;

• ringing in your ears, or sudden hearing loss;

• chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;

• irregular heartbeat;

• swelling in your hands, ankles, or feet;

• shortness of breath;

• vision changes;

• feeling light-headed, fainting; or

• penis erection that is painful or lasts 4 hours or longer.

There are also less serious effects of Cialis that can be observed:

• warmth or redness in your face, neck, or chest;

• stuffy nose;

• headache;

• upset stomach; or

• back pain.

The list of the Cialis side effects is incomplete and your organism can react in some other ways. To crown it all, you must contact the doctor as soon as you notice any unusual or bothersome changes in your organism.