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ALLEGRA vs PATANASE

Independent side-by-side comparison.

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

Possible drug interaction. ALLEGRA and PATANASE 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
$1.23 /g

Type

RX
RX

Active ingredient

FEXOFENADINE HYDROCHLORIDE
OLOPATADINE HYDROCHLORIDE

Dosage forms

Suspension, Capsule
Spray/Inhaler, metered

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
Allergic Conjunctivitis

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Frequently asked questions

What is the difference between Allegra and Patanase?

Allegra contains Fexofenadine Hydrochloride, while Patanase contains Olopatadine Hydrochloride — 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.