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COLAZAL vs HALFLYTELY

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 7, 2026·How we rate

Possible drug interaction. COLAZAL and HALFLYTELY 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.

Rating

74/100
70/100

Pharmacy pays

~$11.02 /30
~$10.09 /30

Type

RX
RX

Active ingredient

BALSALAZIDE DISODIUM
BISACODYL AND POLYETHYLENE GLYCOL 3350 AND POTASSIUM CHLORIDE AND SODIUM BICARBONATE AND SODIUM CHLORIDE

Dosage forms

Capsule
Tablet, delayed release

Drug class

Aminosalicylate
—

Boxed warning

None
None

Treats

Ulcerative Colitis
—

Frequently asked questions

Which is better-rated, Colazal or Halflytely?

By our independent rating, Colazal scores higher — 3.7 vs 3.5 out of 5 for Halflytely. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Colazal or Halflytely?

Halflytely costs pharmacies less to acquire — about $10.09 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 Colazal and Halflytely?

Colazal contains Balsalazide Disodium, while Halflytely contains Bisacodyl and Polyethylene Glycol 3350 and Potassium Chloride and Sodium Bicarbonate and Sodium Chloride — 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.