CHLOR-TRIMETON vs OLOPATADINE HYDROCHLORIDE

Independent side-by-side comparison.

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

Possible drug interaction. CHLOR-TRIMETON and OLOPATADINE HYDROCHLORIDE 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.

Attribute	CHLOR-TRIMETON	OLOPATADINE HYDROCHLORIDE
Rating	New	66/100
Pharmacy pays	—	$1.23 /g
Type	RX	RX
Active ingredient	CHLORPHENIRAMINE MALEATE	OLOPATADINE HYDROCHLORIDE
Manufacturer	Schering	Apotex
Dosage forms	Tablet, extended release, Injectable	Solution, Drops, Spray/Inhaler, Spray/Inhaler, metered
Drug class	Histamine-1 Receptor Antagonist	Histamine-1 Receptor Antagonist
Boxed warning	None	None
Treats	Perennial Allergic Rhinitis, Urticaria	Allergic Conjunctivitis

chlor-trimeton olopatadine hydrochloride

Rating

New

66/100

Pharmacy pays

—

$1.23 /g

Type

Active ingredient

CHLORPHENIRAMINE MALEATE

OLOPATADINE HYDROCHLORIDE

Manufacturer

Schering

Apotex

Dosage forms

Tablet, extended release, Injectable

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

Drug class

Histamine-1 Receptor Antagonist

Boxed warning

None

Treats

Perennial Allergic Rhinitis, Urticaria

Allergic Conjunctivitis

Frequently asked questions

What is the difference between Chlor-Trimeton and Olopatadine Hydrochloride?

Chlor-Trimeton contains Chlorpheniramine Maleate, while Olopatadine Hydrochloride 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.