Nitro Dur Patch (Nitroglycerin Transdermal Patch)

Name: Nitro Dur Patch
Brand: Dr Reddys
SKU: 1783
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Nitro Dur Patch 30 Patches Pack

Manufacturer: Dr Reddys

Country: Canada

Dosage: 0.6 mg

Qty-Price (USD):

Type:

Product: Nitro Dur Patch 30 Patches Pack

Manufacturer: Dr Reddys

Country: Canada

Dosage: 0.8 mg

Qty-Price (USD):

Generic Equivalent of Nitro Dur Patch

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Nitroglycerin Transdermal Patch 30 Patches Pack

Manufacturer: Generic

Country: Canada

Dosage: 0.2 mg

Qty-Price (USD):

Type:

Product: Nitroglycerin Transdermal Patch 30 Patches Pack

Manufacturer: Generic

Country: Canada

Dosage: 0.4 mg

Qty-Price (USD):

Type:

Product: Nitroglycerin Transdermal Patch 30 Patches Pack

Manufacturer: Generic

Country: Canada

Dosage: 0.6 mg

Qty-Price (USD):

Type:

Product: Nitroglycerin Transdermal Patch 30 Patches Pack

Manufacturer: Generic

Country: Canada

Dosage: 0.8 mg

Qty-Price (USD):

Nitro Dur Patch online Canadian Pharmacy

Nitro Dur Patch Information

medically reviewed by Carol Hou (BSc. Pharm) on January 9, 2026.

A licensed pharmacist (Licensed Community Pharmacies Directory | College of Pharmacists of British Columbia) with over 20 years of experience in medication management, specifically medication safety, she has reviewed the information for accuracy and completeness.

Nitro Dur Patch and Nitroglycerin Transdermal Patch at CanadaPharmacyOnline.com

Brand-name Nitro-Dur patches remain available in the United States and Canada. While the primary manufacturer or distributor may change over time (e.g., from Merck to current distributors such as USpharma Ltd and Dr. Reddy’s), the brand-name product remains on the market.

Generic nitroglycerin transdermal patches are sourced from manufacturers that meet applicable regulatory standards. The specific manufacturers of your dispensed medication may vary.

Important Information about Generic Nitroglycerin Transdermal Patches

Generic nitroglycerin patches contain the same active ingredient as brand-name Nitro Dur Patches and must meet the same effectiveness and quality standards. This means it is designed to work in the same way as Nitro Dur Patches. Studies have shown that generic nitroglycerin patches are bioequivalent to brand-name Nitro Dur Patches, meaning they have similar absorption and achieve comparable blood concentrations. However, individual responses to medication can vary due to factors such as metabolism, genetics, and other health conditions.

For more information about generic drug approval and bioequivalence, please visit Access to Generic Drugs in Canada | Canada.ca.

Dosage:

Nitro-Dur is available in Canada as transdermal patches in the following strengths:
• 0.2 mg/hr (containing 40 mg total nitroglycerin)
• 0.4 mg/hr (containing 80 mg total nitroglycerin)
• 0.6 mg/hr (containing 120 mg total nitroglycerin)
• 0.8 mg/hr (containing 160 mg total nitroglycerin)

Your doctor will determine the appropriate dose based on your individual needs and medical conditions.

Usage:

The Nitro-Dur patch is a prescribed medication used to prevent stable angina (chest pain). While the patch provides a steady release of nitroglycerin, it is not intended for continuous 24-hour wear. To prevent tolerance to the medication, a nitrate-free interval of 10 to 12 hours is required every 24 hours. Your doctor will determine the best time for this interval based on when your symptoms are least likely to occur; while many patients remove the patch at bedtime, others may be instructed to remove it during the day.

Mechanism of Action:
The Nitro-Dur patch is a transdermal medication that releases nitroglycerin, which your body converts into a natural substance called nitric oxide. This nitric oxide directly affects blood vessels, causing them to relax and widen. This widening effect is especially pronounced in the veins, thereby reducing the amount of blood returning to the heart. By lowering this volume, the patch significantly eases the heart's workload and its oxygen needs. This dual action—improving blood flow and decreasing oxygen demand—helps the patch effectively prevent episodes of chest pain (angina) caused by inadequate oxygen delivery to the heart muscle.

Take the Nitro Dur Patch exactly as your doctor prescribes, following the instructions in the product monograph in Canada. Consult a doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before starting the Nitro Dur Patch, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects:

The information below outlines potential side effects of the Nitro Dur Patch (nitroglycerin transdermal patches). It is not an exhaustive list, and individual reactions can vary.

Common side effects – These are common side effects of the Nitro Dur Patch, but others are possible. Contact your doctor promptly if any side effects are persistent, worsening, or concerning, or if you experience any other concerning symptoms.
• Dizziness or Lightheadedness
• Flushing (Reddening or warming of the skin)
• Headache (Most frequent side effect, can be severe)
• Hypotension (Low Blood Pressure)
• Nausea and/or Vomiting
• Skin Reactions at application site (Redness, itching, irritation)
• Tachycardia (Rapid Heartbeat)

Other Potential Side Effects (less common):
• Blurred Vision
• Confusion
• Crescendo Angina (Increased frequency or severity of chest pain)
• Drowsiness
• Dry Mouth
• Paradoxical Bradycardia (Unusually slow heartbeat)
• Restlessness
• Skin Changes (Severe reactions like blistering, crusting, or eczema)
• Syncope (Fainting)
• Vertigo (Sensation of spinning)

Serious Side Effects: Seek immediate medical attention or call emergency services if you experience any of the following symptoms: • Allergic Reaction (Severe—symptoms include difficulty breathing, swelling of the face/throat, or widespread hives)
• Heartbeat (Very fast, irregular, or pounding)
• Hypotension (Severe or prolonged low blood pressure causing collapse)
• Methemoglobinemia (Rare blood disorder—signs include blue-colored lips/fingers, shortness of breath, severe fatigue)
• Worsening Chest Pain (Angina)

Contraindications:

The following are key contraindications and important warnings (not an exhaustive list). Before starting the Nitro Dur Patch, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Do NOT take the Nitro Dur Patch/ the Nitroglycerin Transdermal Patch if you have the following conditions:
• Acute Circulatory Failure: Conditions associated with severe hypotension (low blood pressure) or shock.
• Anemia (Severe): Severe lack of healthy red blood cells.
• Hypersensitivity: A known allergy or sensitivity to nitroglycerin, any organic nitrates/nitrites, or the patch adhesives.
• Increased Intracranial Pressure (ICP): if you have elevated pressure within the skull (e.g., due to head trauma or cerebral hemorrhage). Nitroglycerin can further increase brain pressure by widening blood vessels, which may worsen these conditions.
• Medication Interactions: Use of PDE-5 inhibitors (Viagra, Cialis, etc.) or sGC stimulators (Adempas/Riociguat).
• Myocardial Insufficiency due to Obstruction: Reduced heart function caused by conditions like Aortic/Mitral Stenosis, Hypertrophic Obstructive Cardiomyopathy (HOCM), Pericardial Tamponade, or Constrictive Pericarditis.

Tell your doctor about all of your medical conditions, past and present, before starting the Nitro Dur Patch. This is crucial as certain conditions affect the drug’s safety.
• Heart Problems: History of heart attack, stroke, or heart failure.
• Hypotension: Pre-existing low blood pressure.
• Kidney Disease: Reduced kidney function.
• Liver Problems: Reduced liver function.

Drug Interactions:

Before starting the Nitro Dur Patch, discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, refer to the official product monograph from Merck Canada at https://www.merck.com/product/usa/pi_circulars/n/nitro-dur/nitrodur_ppi.pdf.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, herbal supplements, recreational drugs, and any significant dietary changes, as these may interact with the Nitro Dur Patch. The Nitro Dur Patch may interact with other medicines, but is not limited to:
• Interactions that Cause Severe, Life-Threatening Hypotension:
o Phosphodiesterase Type 5 (PDE-5) Inhibitors: Medications for erectile dysfunction (ED) or pulmonary arterial hypertension (PAH). Co-administration is absolutely contraindicated due to the risk of severe, life-threatening hypotension.
o Soluble Guanylate Cyclase (sGC) Stimulators: Medications used to treat PAH. Co-administration is absolutely contraindicated due to the risk of severe hypotension.
• Interactions that Increase Hypotension and Dizziness Risk:
o Alcohol (Ethanol): Can significantly enhance the blood pressure-lowering effect of nitroglycerin, increasing the risk of dizziness and orthostatic hypotension.
o Antihypertensive Medications: Other medications used to lower blood pressure. The combination can lead to an additive blood pressure-lowering effect, requiring dose adjustment or close monitoring.
o Other Vasodilators: Any other medication or substance that causes blood vessels to widen. • Other Important Interactions:
o Ergot Alkaloids: Medications used to treat migraine headaches. Nitroglycerin may decrease the effectiveness of these drugs.

Pregnancy and Breastfeeding:

The use of Nitro-Dur during pregnancy should be determined by a healthcare provider. While animal studies did not show fetal harm, there is insufficient data from well-controlled human studies. Current labeling provides a risk summary rather than a letter category to help patients and doctors make informed decisions.

Similarly, it remains unknown whether nitroglycerin passes into breast milk. Although limited reports of topical use for other conditions (like anal fissures) have not shown adverse effects in infants, a cautious approach is necessary. It is essential to discuss your status with a physician, as they may recommend monitoring the infant for symptoms such as flushing or discomfort.

Use in Children:

The Nitro-Dur patch is not recommended for children, as its safety and efficacy have not been established in pediatric patients. The manufacturer and health authorities advise against giving the patch to children. While specialized topical formulations are sometimes used under strict supervision for conditions such as neonatal tissue injury, the transdermal patch is intended for adults. Parents must also ensure that discarded patches are kept out of reach of children, as they may still contain residual medication that is hazardous.

Frequently Asked Questions about Nitro Dur Patches at Canada Pharmacy Online:

Why are Nitro Dur Patches more affordable in Canada than in the United States?

Prescription drug prices, including Nitro Dur Patches, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower prices than in the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/.

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to offering you the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Do you ship to the United States?

Yes, we do. It usually takes between 7 and 18 business days to receive your order from our pharmacy.

Is there a generic for the Nitro Dur Patch?

Yes, a generic version is available for this product.

Can I buy the Nitro Dur Patch over the counter from you?

No, Nitro Dur Patch requires a prescription from your doctor. We are unable to sell this product without a valid prescription from your doctor.

What Should I Avoid While Using Nitro Dur Patch?

It is advisable to avoid alcohol while using Nitro Dur Patch, as consuming alcohol can increase the risk of headaches, dizziness, or lightheadedness. Since Nitro Dur Patch may cause dizziness and fainting, exercise extra caution when engaging in activities such as physical activity, standing for extended periods, driving, or in hot weather.

Can I stop using Nitro Dur Patch suddenly?

Tolerance to NITRO-DUR and similar drugs can develop after extended use. Long-term use may make angina attacks easier to trigger. Do not suddenly stop using Nitro Dur Patch. Consult your prescribing doctor if you want to stop using Nitro Dur.

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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