What is the active ingredient in Allegra?
Allegra
Medications
Status:
Open Sep 21, 2026 - 09:01 AM
1answer
Answer
Sep 21, 2026 - 09:01 AM
The active ingredient in Allegra is fexofenadine hydrochloride (HCl). Fexofenadine works by blocking histamine receptors, which reduces allergy symptoms without causing drowsiness. Blocking histamine is important because histamine is the chemical in your body that causes allergy symptoms.
View More Product Details
Browse by Category
Medications
View our complete selection of Medications to find the one that suites your needs.
View All
View all Medications Questions & Answers
View all Allegra Questions & Answers
