ALDORIL 15 vs COLAZAL

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 8, 2026·How we rate

Possible drug interaction. ALDORIL 15 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	ALDORIL 15	COLAZAL
Rating	72/100	74/100
Pharmacy pays	~$0.91 /30	~$11.02 /30
Type	RX	RX
Active ingredient	HYDROCHLOROTHIAZIDE AND METHYLDOPA	BALSALAZIDE DISODIUM
Manufacturer	Merck	Valeant Pharm Intl
Dosage forms	Tablet	Capsule
Drug class	—	Aminosalicylate
Boxed warning	None	None
Half-life	about 6 to 15 hours (the label reports a range, not a single number)	—
Treats	—	Ulcerative Colitis

aldoril 15 colazal

Rating

72/100

74/100

Pharmacy pays

~$0.91 /30

~$11.02 /30

Type

Active ingredient

HYDROCHLOROTHIAZIDE AND METHYLDOPA

BALSALAZIDE DISODIUM

Manufacturer

Merck

Valeant Pharm Intl

Dosage forms

Tablet

Capsule

Drug class

—

Aminosalicylate

Boxed warning

None

Half-life

about 6 to 15 hours (the label reports a range, not a single number)

—

Treats

—

Ulcerative Colitis

Frequently asked questions

Which is better-rated, Aldoril 15 or Colazal?

By our independent rating, Colazal scores higher — 3.7 vs 3.6 out of 5 for Aldoril 15. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Aldoril 15 or Colazal?

Aldoril 15 costs pharmacies less to acquire — about $0.91 vs $11.02 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 Aldoril 15 and Colazal?

Aldoril 15 contains Hydrochlorothiazide and Methyldopa, 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.