Isradipine Shortage Update: What Patients Need to Know in 2026

If you take isradipine for high blood pressure, you may have heard about supply problems in recent years. This article gives you a full update on the isradipine shortage, where things stand in 2026, and what you can do to protect yourself from running out of your medication.

Is Isradipine Still in Shortage in 2026?

As of early 2026, isradipine is not listed as an active shortage on the FDA drug shortage database or the ASHP Drug Shortages Resource Center. The official shortage was resolved in December 2023 after Teva Pharmaceuticals took over as the sole remaining manufacturer of isradipine capsules in the United States.

However, the resolution of a formal shortage does not mean every pharmacy carries isradipine. Because it is a low-volume drug, many retail pharmacies — especially smaller chains and independents — may not stock it regularly. Patients may still need to search for it or request that their pharmacy place a special order.

What Happened During the 2023 Isradipine Shortage?

The ASHP tracked an official isradipine capsule shortage beginning in February 2023. The shortage was directly caused by Epic Pharma, LLC — one of the manufacturers of generic isradipine — discontinuing their capsule line. This left Teva Pharmaceuticals as the only remaining supplier.

With only one manufacturer, any demand surge, production delay, or distribution issue could cause a widespread shortage. The ASHP updated its shortage bulletin in December 2023 to note that Teva had isradipine capsules (2.5 mg and 5 mg, 100-count bottles) available through their standard distribution network.

Why Isradipine Availability Remains Fragile

Even with the formal shortage resolved, several structural factors mean isradipine supply could tighten again:

• Single-source manufacturing. Teva is the only U.S. manufacturer. Any production disruption would have immediate patient impact.
• Brand discontinuation. DynaCirc and DynaCirc CR are permanently off the market, so there is no branded fallback.
• Low pharmacy demand. Isradipine is prescribed far less frequently than alternatives like amlodipine, so pharmacies often don't reorder it proactively.

What Patients Should Do Right Now

Here are practical steps to protect your medication supply:

1. Refill early. Most insurance plans and Medicare Part D allow early refills (7-14 days before you run out). Always take advantage of this window.
2. Talk to your pharmacist about ordering ahead. Ask them to place an order 3-5 days before your refill date to ensure isradipine is in stock when you need it.
3. Use medfinder. medfinder contacts pharmacies in your area to find out which ones have your medication in stock, saving you time and helping you avoid a gap in treatment.
4. Tell your doctor about supply concerns. If you are consistently unable to find isradipine, your prescriber may recommend a more readily available alternative.

What About DynaCirc CR?

DynaCirc CR (isradipine GITS, the once-daily controlled-release tablet) was permanently discontinued and is no longer available in any form. If you were previously on DynaCirc CR, your doctor would have transitioned you to twice-daily generic isradipine capsules or an alternative medication.

The Bottom Line

The isradipine shortage of 2023 has been officially resolved, but availability remains inconsistent due to limited manufacturing. Patients should plan ahead, refill early, and have a backup conversation with their doctor about isradipine alternatives just in case.