Alternatives to Nitro-Dur If You Can't Fill Your Prescription

When Nitro-Dur isn't available at your pharmacy, it's natural to wonder: What else can I take? The answer depends on why you were prescribed Nitro-Dur and what your cardiologist considers clinically appropriate. Never switch medications on your own — but this guide will help you have an informed conversation with your provider about your options.

Option 1: Generic Nitroglycerin Patches (Direct Substitutes)

The most straightforward alternative to Nitro-Dur is another brand or generic of nitroglycerin transdermal patch at the same dose strength. Since Nitro-Dur is itself a brand name, generic nitroglycerin patches are FDA-rated bioequivalent and considered direct substitutes.

Minitran: Available in 0.1, 0.2, 0.4, and 0.6 mg/hr strengths. Works identically to Nitro-Dur.

Generic nitroglycerin transdermal system: Made by multiple manufacturers (Mylan, Actavis, others). Bioequivalent at the same mg/hr dose.

Nitro TD Patch-A: Another generic formulation available at some pharmacies.

If your prescription is written for "Nitro-Dur" by brand name, ask your pharmacist whether the prescriber allowed generic substitution. Most physicians do — and generics are often significantly less expensive.

Option 2: Isosorbide Mononitrate (Imdur) — Same Drug Class, Oral Form

Isosorbide mononitrate (brand: Imdur) is a long-acting oral nitrate in the same drug class as nitroglycerin. It is FDA-approved for the prevention of angina and is widely available as a generic. Your cardiologist may consider switching you to isosorbide mononitrate if nitroglycerin patches continue to be difficult to find.

Key differences to discuss with your doctor:

Taken once or twice daily as an oral tablet, rather than applied as a patch

Requires dose-timing adjustments to maintain a nitrate-free interval (usually in the afternoon/evening)

Generally very well tolerated and widely stocked at most pharmacies

Generic versions cost as little as $10–$30 per month

Option 3: Isosorbide Dinitrate (Isordil) — Shorter-Acting Oral Nitrate

Isosorbide dinitrate (brand: Isordil) is a shorter-acting nitrate taken two to three times per day. It's been used for angina prevention for decades and has a well-established track record. Because it needs more frequent dosing than Nitro-Dur or isosorbide mononitrate, it may be less convenient — but it can be a reliable alternative.

Option 4: Beta-Blockers (Metoprolol, Atenolol) — Different Mechanism, Same Goal

Beta-blockers like metoprolol succinate (Toprol-XL) or atenolol are first-line antianginal medications that work differently from nitrates. They reduce heart rate and blood pressure, decreasing the heart's oxygen demand. Many cardiologists already have their angina patients on a beta-blocker alongside a nitrate — if you're not already on one, this could be a discussion to have with your prescriber.

Option 5: Calcium Channel Blockers (Amlodipine, Diltiazem)

Calcium channel blockers such as amlodipine (Norvasc) or diltiazem are also used for chronic angina prevention, particularly in patients who cannot tolerate beta-blockers. These medications reduce cardiac workload through vasodilation and heart rate control, offering an alternative pathway to the same clinical goal.

Important: Don't Stop Nitro-Dur Without Talking to Your Doctor

Nitroglycerin patches are prescribed as part of a cardiac management plan. Abruptly stopping or switching to an unequivalent medication can increase your risk of angina attacks. Always contact your cardiologist or prescriber before making any changes to your regimen.

Related: How to find Nitro-Dur in stock near you | Why Is Nitro-Dur Hard to Find?