Tightness in the chest.
Allegra side effects dry eyes.
These side effects may go away during treatment as your body adjusts to the medicine.
Sores in the mouth or on the lips.
Some side effects may occur that usually do not need medical attention.
Hives itching or skin rash.
Rare side effects agitation an earache cough difficulty sleeping fever itching nervousness nightmares pain stomach cramps.
Nervousness rash sleeplessness terrifying dreams trouble sleeping.
Seek immediate medical attention if you experience any of the following allegra side effects.
As noted above all oral antihistamines including newer generation antihistamines such as claritin zyrtec cetirizine pfizer and allegra fexofenadine aventis pharmaceuticals dry the eye.
This can worsen ocular allergies in two ways.
Common side effects may include.