OLOPATADINE HYDROCHLORIDE vs XYZAL ALLERGY 24HR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Attribute	OLOPATADINE HYDROCHLORIDE	XYZAL ALLERGY 24HR
Rating	66/100	New
Pharmacy pays	$1.23 /g	$0.06 /mL
Type	RX	OTC
Active ingredient	OLOPATADINE HYDROCHLORIDE	LEVOCETIRIZINE DIHYDROCHLORIDE
Manufacturer	Apotex	Chattem Sanofi
Dosage forms	Solution, Drops, Spray/Inhaler, Spray/Inhaler, metered	Tablet
Drug class	Histamine-1 Receptor Antagonist	Histamine-1 Receptor Antagonist
Boxed warning	None	None
Treats	Allergic Conjunctivitis	Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis, Urticaria

olopatadine hydrochloride xyzal allergy 24hr

Rating

66/100

New

Pharmacy pays

$1.23 /g

$0.06 /mL

Type

OTC

Active ingredient

OLOPATADINE HYDROCHLORIDE

LEVOCETIRIZINE DIHYDROCHLORIDE

Manufacturer

Apotex

Chattem Sanofi

Dosage forms

Solution, Drops, Spray/Inhaler, Spray/Inhaler, metered

Tablet

Drug class

Histamine-1 Receptor Antagonist

Boxed warning

None

Treats

Allergic Conjunctivitis

Seasonal Allergic Rhinitis, Perennial Allergic Rhinitis, Urticaria

Get xyzal allergy 24hr

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Frequently asked questions

What is the difference between Olopatadine Hydrochloride and Xyzal Allergy 24hr?

Olopatadine Hydrochloride contains Olopatadine Hydrochloride, while Xyzal Allergy 24hr contains Levocetirizine Dihydrochloride — 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.