Fexofenadine (
Allegra®) is a medication used to treat seasonal
allergies and chronic hives. It is part of a class of medicines called antihistamines.
Fexofenadine was originally a prescription medication. However, in March 2011, fexofenadine became available over-the-counter (OTC).
Side Effects of Fexofenadine
As with any medicine, side effects are possible with fexofenadine. However, not everyone who takes the drug will experience side effects. In fact, most people tolerate it well. In most cases, if side effects occur, they are minor, meaning they require no treatment or are easily treated by you or your healthcare provider.
Based on clinical studies, the most common side effects occurring in either adults or children are:
What Should I Tell My Healthcare Provider Before Taking It?
You should talk with your healthcare provider prior to taking fexofenadine if you:
- Have kidney disease
- Are pregnant or are planning to become pregnant (see Allegra and Pregnancy)
- Are breastfeeding
- Are age 65 or older
- Have any allergies, including allergies to fexofenadine.
Also, tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines,
antacids, vitamins, and herbal supplements.
Finally, make sure to contact your healthcare provider or call an ambulance immediately if you experience any breathing problems or difficulty swallowing.