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ALLEGRA HIVES vs DIMENHYDRINATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 12, 2026·How we rate

Possible drug interaction. ALLEGRA HIVES and DIMENHYDRINATE are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Rating

New
70/100

Pharmacy pays

~$7.33 /30

Type

RX
RX

Active ingredient

FEXOFENADINE HYDROCHLORIDE
DIMENHYDRINATE

Dosage forms

Tablet
Injectable, Tablet

Drug class

Histamine-1 Receptor Antagonist
Histamine-1 Receptor Antagonist

Boxed warning

None
None

Half-life

about 14 hours (label: mean elimination half-life 14.4 hours)

Treats

Perennial Allergic Rhinitis, Urticaria
Motion Sickness, Nausea, Vertigo

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Frequently asked questions

What is the difference between Allegra Hives and Dimenhydrinate?

Allegra Hives contains Fexofenadine Hydrochloride, while Dimenhydrinate contains Dimenhydrinate — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.