Medically reviewed on November 17, 2017.
What is Nitro-Dur?
Nitroglycerin is in a group of drugs called nitrates. Nitroglycerin dilates (widens) blood vessels, making it easier for blood to flow through them and easier for the heart to pump.
Nitro-Dur (skin patch) is used to prevent attacks of chest pain (angina). This medicine will not treat an angina attack that has already begun.
Nitro-Dur may also be used for purposes not listed in this medication guide.
You should not use this medicine if you are allergic to any type of adhesive on a bandage or other transdermal skin patch, or if you are using medicine to treat pulmonary arterial hypertension (PAH), such as riociguat, (Adempas), sildenafil (Revatio), or tadalafil (Adcirca).
Do not take erectile dysfunction medicine (Viagra, Cialis, and others) while you are using Nitro-Dur, or you could have a sudden and serious decrease in blood pressure.
Before taking this medicine
you are allergic to any type of adhesive on a bandage or other transdermal skin patch; or
you are using medicine to treat pulmonary arterial hypertension (PAH), such as riociguat (Adempas), sildenafil (Revatio), or tadalafil (Adcirca).
Do not take erectile dysfunction medicine (Viagra, Cialis, Levitra, Stendra, Staxyn, sildenafil, avanafil, tadalafil, vardenafil) while you are using Nitro-Dur. Using erectile dysfunction medicine with nitroglycerin can cause a sudden and serious decrease in blood pressure.
To make sure nitroglycerin is safe for you, tell your doctor if you have:
congestive heart failure;
a buildup of fluid around your heart;
kidney disease (or if you are on dialysis);
if you have recently had a heart attack.
FDA pregnancy category C. It is not known whether nitroglycerin will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medicine.
It is not known whether Nitro-Dur passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.
How should I use Nitro-Dur?
Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended.
Wash your hands after applying or removing a skin patch.
Apply the patch to clean, dry, and hairless skin on your chest or the outer part of your upper arm. To remove any hair from these skin areas, clip the hair short but do not shave it. Press the patch firmly into place with the palm of your hand. Make sure it is well sealed around the edges.
Choose a different place on your body to wear the patch each time you put on a new one.
Do not wear more than one Nitro-Dur patch at a time. Using extra skin patches will not make the medication more effective. Never cut a skin patch.
The nitroglycerin skin patch is usually worn for 12 to 14 hours and then removed. A new patch is put on after a "patch-free" period of 10 to 12 hours. Your doctor may want you to wear the patch for longer or shorter periods of time. Follow your doctor's instructions carefully.
You may leave the patch on while bathing, showering, or swimming. If a patch falls off, try sticking it back into place. If it does not stick well, put on a new patch.
Nitro-Dur will not work fast enough to treat an angina attack. Your doctor may prescribe a fast-acting medicine to treat an angina attack. Tell your doctor if it seems like any of your medicines don't work as well in treating or preventing angina attacks.
If you need surgery or medical tests, tell the surgeon or doctor ahead of time that you are using Nitro-Dur. The skin patch may burn your skin if you wear the patch during an MRI (magnetic resonance imaging). Remove the patch before undergoing such a test.
If you need emergency heart resuscitation, your family or caregivers should tell emergency medical personnel if you are wearing a nitroglycerin skin patch. The patch should be removed before any electrical equipment (such as a defibrillator) is used on you.
After removing a skin patch fold it in half, sticky side in, and throw it away in a place where children or pets cannot get to it. Keep both used and unused nitroglycerin skin patches out of the reach of children or pets.
Do not stop using this medicine without your doctor's advice, even if you feel fine. You may have increased angina attacks if you stop using the medication suddenly.
Store at room temperature, away from moisture and heat. Do not refrigerate. Keep each skin patch in its sealed pouch until you are ready to use it.
What happens if I miss a dose?
Apply a patch as soon as you remember, and keep it on for the rest of your wearing time without changing your patch removal schedule. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra patches to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. The amount of nitroglycerin in a used skin patch could be dangerous to a child or pet who accidentally chews on the patch. Seek emergency medical attention if this happens.
Overdose symptoms may include severe or throbbing headache, vision problems, confusion, spinning sensation, pounding heartbeats or fluttering in your chest, stomach cramps, vomiting, gasping for breath, sweating, cold and clammy skin, slow heart rate, weak or shallow breathing, fainting, and seizure.
What should I avoid while using Nitro-Dur?
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
Drinking alcohol can increase certain side effects of nitroglycerin.
Nitro-Dur side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
worsening chest pain, slow heart rate;
a light-headed feeling, like you might pass out; or
pale or blue colored appearance in your fingers or toes.
Nitroglycerin can cause severe headaches, especially when you first start using it. These headaches may gradually become less severe as you continue to use the medicine. Do not stop using this medicine to avoid headaches. Ask your doctor before using any headache pain medication.
Common side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
What other drugs will affect Nitro-Dur?
Other drugs may interact with nitroglycerin transdermal, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2018 Cerner Multum, Inc. Version: 11.02.
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