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Allegra Drug Description - Fexofenadine - HealthScout |
 | | Fexofenadine hydrochloride, the active ingredient of ALLEGRA, is a histamine H1-receptor antagonist with the chemical name (±)-4-[1 hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-butyl]-, -dimethyl benzeneacetic acid hydrochloride. |
 | | Fexofenadine hydrochloride is a white to off-white crystalline powder. |
 | | Fexofenadine hydrochloride is a racemate and exists as a zwitterion in aqueous media at physiological pH. |
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