COLAZAL vs VIRAC REX

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated September 29, 2026·How we rate

Possible drug interaction. COLAZAL and VIRAC REX 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	COLAZAL	VIRAC REX
Rating	74/100	New
Pharmacy pays	~$11.09 /30	—
Type	RX	RX
Active ingredient	BALSALAZIDE DISODIUM	LAPYRIUM CHLORIDE AND UNDECOYLIUM CHLORIDE IODINE COMPLEX
Manufacturer	Valeant Pharm Intl	Chesebrough Ponds
Dosage forms	Capsule	Solution
Drug class	Aminosalicylate	—
Boxed warning	None	None
Treats	Ulcerative Colitis	—

colazal virac rex

Rating

74/100

New

Pharmacy pays

~$11.09 /30

—

Type

Active ingredient

BALSALAZIDE DISODIUM

LAPYRIUM CHLORIDE AND UNDECOYLIUM CHLORIDE IODINE COMPLEX

Manufacturer

Valeant Pharm Intl

Chesebrough Ponds

Dosage forms

Capsule

Solution

Drug class

Aminosalicylate

—

Boxed warning

None

Treats

Ulcerative Colitis

—

Frequently asked questions

What is the difference between Colazal and Virac Rex?

Colazal contains Balsalazide Disodium, while Virac Rex contains Lapyrium Chloride and Undecoylium Chloride Iodine Complex — 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.