Is cardizem the same as diltiazem?

Yes. Cardizem is a brand name for the drug diltiazem, a calcium channel blocker. They’re the same medication, but Cardizem comes in different formulations (immediate-release Cardizem, and extended-release versions like Cardizem CD and Cardizem LA). There are also generic diltiazem products and other brands with the same active drug.

Key point: the release form and dosing schedule differ between products, so don’t switch brands or formulations without your clinician’s guidance. If you want, tell me what formulation you’re asking about and I can explain the differences.