

Can't find Cardizem XR at your pharmacy? Use these tools and tips to locate Diltiazem ER in stock near you, including Medfinder and more.
When your pharmacist says "we don't have it" and can't tell you when it's coming back, the stress is real. Cardizem XR (Diltiazem extended-release) is a daily medication — you can't just skip it and wait. High blood pressure doesn't take days off.
The good news? Even during supply disruptions, Cardizem XR and generic Diltiazem ER are usually available somewhere nearby. The trick is knowing where to look. Here are three proven strategies to find your medication fast.
The fastest way to find Cardizem XR in stock is to use Medfinder. Instead of calling pharmacy after pharmacy, Medfinder shows you which pharmacies near your ZIP code have Diltiazem ER available right now.
Here's how it works:
This saves you hours of phone calls and the frustration of driving to multiple pharmacies only to be turned away. You can also check specific pharmacies using our guide: How to Check If a Pharmacy Has Cardizem XR in Stock.
When chain pharmacies like CVS, Walgreens, and Rite Aid are out of stock, independent pharmacies are often your best bet. Here's why:
Don't know where to find an independent pharmacy? Search your area on Medfinder, which includes independent pharmacies in its results.
In rare cases where no manufactured version is available, a compounding pharmacy may be able to prepare Diltiazem in a custom formulation. This requires a specific prescription from your doctor and may cost more, but it's an option when nothing else works.
Pharmacies receive new shipments on specific days, and demand patterns vary throughout the week. A few timing tips:
If you've tried the steps above and still can't locate your medication, here are additional options:
Your doctor may be able to switch you to a different Diltiazem extended-release formulation, such as Cartia XT, Tiazac, or Cardizem CD. These contain the same active ingredient but are manufactured by different companies, so availability may differ. For a complete list of options, see Alternatives to Cardizem XR.
Mail-order pharmacies often have larger inventories than local retail pharmacies. If your insurance plan offers a mail-order option, this can be a reliable way to get a 90-day supply delivered to your door. Services like Amazon Pharmacy, Cost Plus Drugs, and Honeybee Health may also carry generic Diltiazem ER at competitive prices.
If you're completely out of medication and can't find it anywhere, your pharmacist may be able to provide a small emergency supply (usually 3–7 days) to bridge the gap. State laws vary on this, but it's worth asking — especially for a blood pressure medication where stopping suddenly could be dangerous.
When you're making calls, keep a simple list:
This prevents duplicate calls and helps your doctor or pharmacist assist you more effectively.
Finding Cardizem XR during a shortage takes effort, but it's doable. Start with Medfinder to check real-time availability, expand your search to independent pharmacies, and time your refills strategically. If your specific formulation remains unavailable, work with your doctor on a safe alternative.
For more information about why this medication has been hard to find, read Why Is Cardizem XR So Hard to Find?. And if cost is a concern, check out How to Save Money on Cardizem XR.
You focus on staying healthy. We'll handle the rest.
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