Where is diltiazem manufactured?

There isn’t a single manufacturing location for diltiazem. It’s produced by many pharmaceutical companies around the world, in various countries and across different dosage forms (tablets, capsules, injectables, etc.).

If you need the specific manufacturing site for a particular product, please share:
- the exact product name (brand or generic)
- the dose/form (e.g., diltiazem 30 mg tablet, Diltiazem HCl injection)
- the country or the NDC/lot number if you have it

How you can find it yourself:
- Check the product packaging or label for “Manufactured by” or “Manufactured for.”
- If you have the packaging or the NDC, look up the product on DailyMed (US) or the EMA/other national labeling databases; these listings show the manufacturer and manufacturing site.
- For tablets, the imprint code can be searched to identify the manufacturer.

If you share the exact product details, I can help look up the manufacturer.