5 doctors weighed in:

When should I take allergy medicine allegra (fexofenadine)?

5 doctors weighed in
Dr. Martin Ostro
Internal Medicine - Allergy & Immunology
4 doctors agree

In brief: Without food

Fexofenadine (allegra) comes in 2 doses for adults, 60 mg.
And 180 mg. The 60 mg dose is taken twice a day, every 12 hr. The 180 mg dose is taken once a day, usually in the morning and it is more effective than 60 mg, 2x/day. Fexofenadine should always be taken 1 hr. Before food because food, especially fatty food, interferes with fexofenadine absorption.

In brief: Without food

Fexofenadine (allegra) comes in 2 doses for adults, 60 mg.
And 180 mg. The 60 mg dose is taken twice a day, every 12 hr. The 180 mg dose is taken once a day, usually in the morning and it is more effective than 60 mg, 2x/day. Fexofenadine should always be taken 1 hr. Before food because food, especially fatty food, interferes with fexofenadine absorption.
Dr. Martin Ostro
Dr. Martin Ostro
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