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Allegra is an over-the-counter medication used to treat allergy symptoms. Allegra is also known by its drug name, Fexofenadine.

Allegra is an antihistamine. Allegra is believed to work by blocking the action of histamines (chemicals associated with allergic reactions) in the body.

How do I take it?
Take Allegra as directed by your doctor, or follow the directions on the package.

Allegra comes in tablet, gel-coated tablet, oral disintegrating tablet, and liquid forms.

Side effects
The FDA-approved label for Allegra lists a warning against using this medication if you have had an allergic reaction to it in the past.

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