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A member asked:

Why can't a person take allegra (fexofenadine) and erythromycin at the same time? i've read there can be interactions. dangerous?

A doctor has provided 1 answer
Dr. Al Hegab answered

Specializes in Allergy and Immunology

Caution with multipl: Caution advised with multiple meds, combination can be altered accordingly, yes Erythromycin and Allegra (fexofenadine) interact, there are other safer combos, only ur doctor can givethe most safe combination if medications u need.

Answered 6/25/2014

4.7k views

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