ALLEGRA ALLERGY vs CHLOR-TRIMETON

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Attribute	ALLEGRA ALLERGY	CHLOR-TRIMETON
Rating	New	New
Pharmacy pays	~$7.33 /30	—
Type	OTC	RX
Active ingredient	FEXOFENADINE HYDROCHLORIDE	CHLORPHENIRAMINE MALEATE
Manufacturer	Chattem Sanofi	Schering
Dosage forms	Tablet	Tablet, extended release, Injectable
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	Perennial Allergic Rhinitis, Urticaria

allegra allergy chlor-trimeton

Rating

New

Pharmacy pays

~$7.33 /30

—

Type

OTC

Active ingredient

FEXOFENADINE HYDROCHLORIDE

CHLORPHENIRAMINE MALEATE

Manufacturer

Chattem Sanofi

Schering

Dosage forms

Tablet

Tablet, extended release, Injectable

Drug class

Histamine-1 Receptor Antagonist

Boxed warning

None

Half-life

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

—

Treats

Perennial Allergic Rhinitis, Urticaria

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Frequently asked questions

What is the difference between Allegra Allergy and Chlor-Trimeton?

Allegra Allergy contains Fexofenadine Hydrochloride, while Chlor-Trimeton contains Chlorpheniramine Maleate — 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.