CALAN vs CARDIZEM LA

Independent side-by-side comparison.

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

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

calan cardizem la

Rating

New

Pharmacy pays

~$5.71 /30

~$9.18 /30

Type

Active ingredient

VERAPAMIL HYDROCHLORIDE

DILTIAZEM HYDROCHLORIDE

Manufacturer

Gd Searle LLC

Bausch

Dosage forms

Tablet

Tablet, extended release

Drug class

Calcium Channel Blocker

Boxed warning

None

Half-life

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

about 3 to 4.5 hours

Treats

Variant Angina Pectoris, Atrial Fibrillation, Atrial Flutter

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Frequently asked questions

Which is cheaper, Calan or Cardizem La?

Calan 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 Calan and Cardizem La?

Calan contains Verapamil Hydrochloride, while Cardizem La contains Diltiazem 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.