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ALLEGRA vs TELDRIN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. ALLEGRA and TELDRIN 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
CHLORPHENIRAMINE MALEATE

Dosage forms

Suspension, Capsule
Capsule, extended release

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

Get teldrinhigher-rated option

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Frequently asked questions

What is the difference between Allegra and Teldrin?

Allegra contains Fexofenadine Hydrochloride, while Teldrin 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.