ASACOL vs COLAZAL

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. ASACOL and COLAZAL 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	ASACOL	COLAZAL
Rating	New	70/100
Pharmacy pays	~$26.72 /30	~$11.17 /30
Type	RX	RX
Active ingredient	MESALAMINE	BALSALAZIDE DISODIUM
Manufacturer	Apil	Valeant Pharm Intl
Dosage forms	Tablet, delayed release	Capsule
Drug class	Aminosalicylate	Aminosalicylate
Boxed warning	None	None
Half-life	about 7 to 9 hours (apparent terminal half-life)	—
Treats	Ulcerative Colitis, Proctitis, Sigmoid Diseases	Ulcerative Colitis

asacol colazal

Rating

New

70/100

Pharmacy pays

~$26.72 /30

~$11.17 /30

Type

Active ingredient

MESALAMINE

BALSALAZIDE DISODIUM

Manufacturer

Apil

Valeant Pharm Intl

Dosage forms

Tablet, delayed release

Capsule

Drug class

Aminosalicylate

Boxed warning

None

Half-life

about 7 to 9 hours (apparent terminal half-life)

—

Treats

Ulcerative Colitis, Proctitis, Sigmoid Diseases

Ulcerative Colitis

Frequently asked questions

Which is cheaper, Asacol or Colazal?

Colazal costs pharmacies less to acquire — about $11.17 vs $26.72 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Asacol and Colazal?

Asacol contains Mesalamine, while Colazal contains Balsalazide Disodium — 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.