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Nitroglycerin transderm.

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.



COMMON BRAND NAME(S): Nitro-Dur, Nitrodisc, Transderm-Nitro


Nitroglycerin relaxes blood vessels allowing more blood to flow through and improves blood flow to the heart. Topical nitroglycerin skin patches are used to prevent angina (chest pain). This medication is NOT for treating an attack of chest pain that has already started.

How To Use

Transdermal skin patches are to be applied to a clean, hairless area on the upper arm or chest not subject to excessive movement. The patch should remain in place while bathing or showering. Remove the previous patch before applying a new one. Apply the new patch to a different area to minimize skin irritation by using a new area of skin. The patch is usually worn for 12 to 14 hours a day and then a new patch put on 10 to 12 hours later or as directed. This drug-free period improves the drug's effectiveness. Do not stop using this drug suddenly without consulting your doctor. Some conditions may worsen when the medication is suddenly stopped. Your dose may need to be gradually decreased.

Side Effects

Headache, dizziness, flushing, rapid heartbeat, restlessness, or skin irritation at patch site may occur as your body adjusts to the medication. If any of these effects persist or become bothersome, inform your doctor. To prevent dizziness and lightheadedness when rising from a seated or lying position, get up slowly. Notify your doctor if you experience: blurred vision, dry mouth, skin rash, nausea. Headache is often a sign the medication is working. Treat headaches with an aspirin or non-aspirin pain reliever as recommended by your doctor. If the headaches continue or become severe, notify your doctor. In the unlikely event you have an allergic reaction to this drug, seek medical attention immediately. Symptoms of an allergic reaction include: rash, itching, swelling, dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.


Before using this medication tell your doctor your medical history especially of: heart problems, head injury or surgery, glaucoma, thyroid conditions, anemia, alcohol usage, allergies (especially allergies to drugs or adhesives). Use caution engaging in activities that require alertness or in operating machinery if this medication makes you dizzy or drowsy. Alcoholic beverages may increase the risk of fainting or of experiencing dizziness. This medication should be used during pregnancy only if clearly needed. Discuss the risks and benefits with your doctor. It is not known if this drug is excreted into breast milk. Consult your doctor before breast-feeding.

Drug Interactions

Tell your doctor of all medications you may use (including prescription and nonprescription drugs), especially of: drugs for high blood pressure, certain migraine drugs (ergot alkaloids), sildenafil, high doses of aspirin. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, remove the patch. Contact your local poison control center or emergency room immediately. Symptoms of overdose may include a persistent, throbbing headache; dizziness; confusion; weakness; sweating; changes in heart rate; changes in vision; flushing; nausea; and vomiting.


Some persons may develop a tolerance to the effects of this medication over time. Notify your doctor if the medication appears to be losing its effectiveness or if the chest pain continues while taking this drug.

Missed Dose

Do not double dose if missed. Apply it as soon as possible and resume regular dosing schedule.


Store at room temperature away from sunlight and moisture. Keep away from heat or flame.

Medical Alert

Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA), or 1-800-668-1507 (Canada).