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A 34-year-old female asked:

Are there any negative side effects if i take one 180mg allegra (fexofenadine) tablet daily for years? i have allergies all yr.

1 doctor answer2 doctors weighed in
Dr. Michael Zacharisen
Allergy and Immunology 33 years experience
Probably not, but: New generation antihstamines are in general safe and effective. However, the best treatment for year round allergies is 1) avoidance of the allergic trigger; 2) antihistamines like allegra; 3) topical nasal steroid sprays (most effective); 4) allergy injections--will provide relief in majority of people and decrease need for medications.

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Last updated Aug 22, 2020


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