Like Zyrtec and Claritin, Allegra is a second-generation antihistamine. Find out how the drugs work and their side effects.
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What is An Antihistamine? -
Allegra Drug InformationAllegra (fexofenadine) is an antihistamine that provides relief of seasonal allergy symptoms such as runny nose, sneezing, itchy throat and for hives. -
Allegra Side EffectsStomach upset, menstrual cramps, back pain, cough, fever, stuffy nose, earache or dizziness may occur.
