COLAZAL vs PREVYMIS

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 5, 2026·How we rate

Possible drug interaction. COLAZAL and PREVYMIS 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	PREVYMIS
Rating	74/100	72/100
Pharmacy pays	~$11.02 /30	—
Type	RX	RX
Active ingredient	BALSALAZIDE DISODIUM	LETERMOVIR
Manufacturer	Valeant Pharm Intl	Merck Sharp Dohme
Dosage forms	Capsule	Injectable, Oral pellets, Tablet
Drug class	Aminosalicylate	Cytomegalovirus Dna Terminase Complex Inhibitor
Boxed warning	None	None
Treats	Ulcerative Colitis	—

colazal prevymis

Rating

74/100

72/100

Pharmacy pays

~$11.02 /30

—

Type

Active ingredient

BALSALAZIDE DISODIUM

LETERMOVIR

Manufacturer

Valeant Pharm Intl

Merck Sharp Dohme

Dosage forms

Capsule

Injectable, Oral pellets, Tablet

Drug class

Aminosalicylate

Cytomegalovirus Dna Terminase Complex Inhibitor

Boxed warning

None

Treats

Ulcerative Colitis

—

Frequently asked questions

Which is better-rated, Colazal or Prevymis?

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

What is the difference between Colazal and Prevymis?

Colazal contains Balsalazide Disodium, while Prevymis contains Letermovir — 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.