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What is Nitro-Dur Patch (Nitroglycerin) prescribed for?

Angina occurs when the heart is not gaining enough blood, thus causing chest pains. This medication is used to prevent these chest pains in patients with a heart condition known as coronary artery disease. Nitroglycerin belongs to a class of drugs known as nitrates. And this medication works by relaxing and widening the blood vessels so blood may flow at a much easier pace on its way to the heart.

This medication will not relieve the chest pain once it occurs. It is also not to be used before any physical activities such as exercise or sexual activity. Doing so will not prevent the chest pain. Other medications may be needed for these scenarios. Speak with your doctor for further details.

When ready to apply, remove the patch from the pouch and peel off the clear protective liner as directed. Normally you will wear this patch on your upper arm or chest. However, you can wear it anywhere on the body that is below the neck and above the knees or elbows.

Apply the patch to a clean, dry and hairless area. Avoid any area with cuts or irritations. Do not apply the patch immediately after bathing or showing; wait until your skin is completely dry. But you may bathe, shower and swim while wearing the patch. When applying, make sure you firm press the patch into place. And make sure to wash your hands after application.

Normally you will use one patch per day and wear it for 12 to 14 hours or as directed by your doctor. Remember, the dosage is based on your medical condition and your response to the treatment.


Before taking this medication, it is best to advise your doctor if you are allergic to Nitroglycerin; or similar drugs (such as isosorbide mononitrate); nitrites; or any other medications or allergies in general. This product may contain inactive ingredients, which can cause allergic reactions or other problems.

Before taking this medication, it is for best to inform your doctor of your Medical history. Especially if you have ever had any of the following; recent head injury, anemia, low blood pressure, loss of too much body water (dehydration), or other heart problems (such as a recent heart attack).

Side Effects

If you are experiencing any of the following side effects, you should speak with your doctor right away. They are as follows; Headache, dizziness, lightheadedness, nausea, and flushing may occur as your body adjusts to this medication.

Headache is often a sign that this medication is working. Your doctor may recommend treating headaches with an over-the-counter pain reliever (such as acetaminophen, or aspirin). If the headaches continue or become severe, tell your doctor promptly.

To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.

Tell your doctor right away if any of these unlikely but serious side effects occur: fainting, fast/irregular/pounding heartbeat.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, and trouble breathing.


What happens if I suddenly stop taking this medication?

There may be a relapse in symptoms as well as side effects. You should speak to your doctor before stopping taking this medication.


 What is the best dosage to take?

The diagnosis with your doctor will be able to determine the best dosage for your treatment. Work with your doctor closely for dosage and dosing schedules.


 What happens if I miss a dose?

You should take the missed dose as soon as you realize you have forgotten. If the forgotten dose is closer to your next scheduled dose, take the next scheduled dose to avoid overlapping in the dose.


 What is the best way to store this medication?

This medication is stored at room temperature and should be kept away from children and pets. Do not throw away this medication in the wastebasket. If you are uncertain how to dispose of this medication, speak with your pharmacist for help in safely disposing of this medication.

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