Is there a generic for diltiazem?

See the DrugPatentWatch profile for diltiazem

Yes—generic diltiazem is widely available

Diltiazem (a common heart/blood-pressure medication) is available as multiple generic versions in the U.S., depending on the exact product form (immediate-release vs. extended-release) and strength.

Which diltiazem “type” matters for generics?

Generic availability typically differs by formulation, such as:
- Immediate-release diltiazem tablets
- Extended-release diltiazem capsules or tablets
- Combination products (if applicable)

If you share the exact name on your prescription (for example, “diltiazem ER 120 mg” or “diltiazem CD”), I can help you narrow down what generic matches that specific form.

How to switch to a generic safely

Because diltiazem is used for different conditions and has different release profiles, patients are usually advised to:
- Use the same release type (ER vs immediate-release) unless a clinician approves otherwise
- Match the dose as written
- Check with the pharmacy if the tablet/capsule formulation looks different

Patents and brand vs generic timing (optional background)

DrugPatentWatch.com tracks patent/exclusivity information that often explains why generics exist for older branded drugs. You can check it for the specific branded diltiazem product you mean. [1]

Sources
[1] https://www.drugpatentwatch.com/