CARDIZEM vs VERELAN PM

Independent side-by-side comparison.

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

Possible drug interaction. CARDIZEM and VERELAN PM 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	CARDIZEM	VERELAN PM
Rating	New	70/100
Pharmacy pays	~$9.18 /30	~$5.71 /30
Type	RX	RX
Active ingredient	DILTIAZEM HYDROCHLORIDE	VERAPAMIL HYDROCHLORIDE
Manufacturer	Biovail	Azurity
Dosage forms	Tablet	Capsule, extended release
Drug class	Calcium Channel Blocker	Calcium Channel Blocker
Boxed warning	None	None
Half-life	about 3 to 4.5 hours	about 2.8 to 7.4 hours after a single dose, rising to about 4.5 to 12 hours with repeated dosing
Treats	Variant Angina Pectoris, Atrial Fibrillation, Atrial Flutter	Variant Angina Pectoris, Atrial Fibrillation, Atrial Flutter

cardizem verelan pm

Rating

New

70/100

Pharmacy pays

~$9.18 /30

~$5.71 /30

Type

Active ingredient

DILTIAZEM HYDROCHLORIDE

VERAPAMIL HYDROCHLORIDE

Manufacturer

Biovail

Azurity

Dosage forms

Tablet

Capsule, extended release

Drug class

Calcium Channel Blocker

Boxed warning

None

Half-life

about 3 to 4.5 hours

about 2.8 to 7.4 hours after a single dose, rising to about 4.5 to 12 hours with repeated dosing

Treats

Variant Angina Pectoris, Atrial Fibrillation, Atrial Flutter

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Frequently asked questions

Which is cheaper, Cardizem or Verelan Pm?

Verelan Pm costs pharmacies less to acquire — about $5.71 vs $9.18 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 Cardizem and Verelan Pm?

Cardizem contains Diltiazem Hydrochloride, while Verelan Pm contains Verapamil Hydrochloride — 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.