Generic Name: nitroglycerin (NYE-troe-GLIS-er-in)
Brand Name: Examples include Minitran and Nitro-Dur
Nitroglycerin patch is used for:
Preventing chronic chest pain caused by heart disease. It also may be used for other conditions as determined by your doctor.
Nitroglycerin patch is a nitrate. It works by relaxing (widening) blood vessels. Chest pain occurs when the heart needs more oxygen than it can get. Relaxing blood vessels allows blood to flow more easily. This reduces the heart's workload and the amount of oxygen needed by the heart.
Do NOT use nitroglycerin patch if:
- you are allergic to any ingredient in nitroglycerin patch
- you are allergic to the adhesive that makes the patch stick to your skin
- you have increased pressure in or severe injury to the head
- you have severe anemia
- you are taking a phosphodiesterase type 5 inhibitor (eg, sildenafil, tadalafil, vardenafil)
Contact your doctor or health care provider right away if any of these apply to you.
Before using nitroglycerin patch:
Some medical conditions may interact with nitroglycerin patch. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you drink alcoholic beverages
- if you have a history of other heart problems (eg, heart failure, enlarged heart, heart attack), overactive thyroid, stroke or other bleeding in the brain, or recent head injury
- if you have anemia, low blood pressure, dehydration, or low blood volume
Some MEDICINES MAY INTERACT with nitroglycerin patch. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Beta-blockers (eg, propranolol), calcium channel blockers (eg, diltiazem), diuretics (eg, furosemide, hydrochlorothiazide), medicines for high blood pressure, phenothiazines (eg, thioridazine), or phosphodiesterase type 5 inhibitors (eg, sildenafil) because the risk of low blood pressure and dizziness on standing may be increased
- Salicylates (eg, aspirin) because they may increase the risk of nitroglycerin patch's side effects
- Alteplase because the effectiveness of nitroglycerin patch may be decreased
This may not be a complete list of all interactions that may occur. Ask your health care provider if nitroglycerin patch may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use nitroglycerin patch:
Use nitroglycerin patch as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- An extra patient leaflet is available with nitroglycerin patch. Talk to your pharmacist if you have questions about this information.
- Nitroglycerin patch is for external use only.
- Apply the patch at the same time every day.
- Wash your hands thoroughly before and after applying the patch.
- Apply the patch to a non-hairy area of the chest, inner side of the upper arm, back, or shoulder.
- Clean and completely dry the skin before applying the patch. If necessary, hair should be removed by clipping or lightly shaving.
- Remove the patch from the package. Apply with a firm pressure to the skin. To avoid skin irritation, change the treatment site daily. Do not apply to irritated or damaged skin.
- If the patch becomes loose, remove it and apply a new patch at a different site.
- After removing the used patch, fold it in half with the sticky sides together. Discard the patch out of the reach of children and away from pets.
- This patch should only be worn for up to 12 to 14 hours a day, or as directed by your doctor, so that you will have a 10 to 12 hour "nitrate-free" period each day. Do not use more of nitroglycerin patch than prescribed. It is important to have a "nitrate-free" period of time each day for nitroglycerin patch to continue to work well and to decrease the risk of physical dependence.
- If you miss a dose of nitroglycerin patch, use it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at once.
Ask your health care provider any questions you may have about how to use nitroglycerin patch.
Important safety information:
- Nitroglycerin patch may cause dizziness, lightheadedness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use nitroglycerin patch with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Check with your doctor before you drink alcohol while you are taking nitroglycerin patch. Drinking alcohol may increase the risk of low blood pressure with nitroglycerin patch.
- Nitroglycerin patch may cause dizziness, lightheadedness, or fainting. Sit down while taking nitroglycerin patch to avoid falling caused by lightheadedness or dizziness.
- Contact your doctor right away if you develop slow heartbeat or new or worsening chest pain after you take nitroglycerin patch.
- Tell your doctor or dentist that you take nitroglycerin patch before you receive any medical or dental care, emergency care, or surgery.
- Nitroglycerin patch may give you daily headaches. This should become less noticeable with time.
- Other dosage forms of nitroglycerin patch (eg, sublingual, or under the tongue, tablets) may not work as well while you are taking nitroglycerin patch.
- Nitroglycerin patch takes about 1 to 2 hours to start working and should not be used for a sudden chest pain attack.
- Lab tests, including heart function, blood pressure, and blood electrolyte levels, may be performed while you use nitroglycerin patch. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
- Use nitroglycerin patch with caution in the ELDERLY; they may be more sensitive to its effects.
- Nitroglycerin patch is not recommended for use in CHILDREN; safety and effectiveness in children have not been confirmed.
- PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using nitroglycerin patch while you are pregnant. It is not known if nitroglycerin patch is found in breast milk. If you are or will be breast-feeding while you are using nitroglycerin patch, check with your doctor. Discuss any possible risks to your baby.
When used for long periods of time without a break, nitroglycerin patch may not work as well. This is known as TOLERANCE. Increasing the dose is not effective in managing tolerance to nitroglycerin patch. Tolerance to other nitrates or nitrites may also occur. Be sure to have a "nitrate-free" period of time each day to help prevent this tolerance. Talk with your doctor if nitroglycerin patch stops working well. Do not take more than prescribed.
Some people who use nitroglycerin patch for a long time without a break may develop a physical need to continue taking it. This is known as physical DEPENDENCE. If you use nitroglycerin patch without a break and then suddenly stop using it, you may get WITHDRAWAL symptoms. These may include chest pain, heart attack, or possibly sudden death. Be sure to have a "nitrate-free" period of time each day; this may help prevent dependence and withdrawal problems.
Possible side effects of nitroglycerin patch:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur:
Dizziness, lightheadedness, or fainting when sitting up or standing; flushing of face and neck; headache; irritation at site of patch; nausea; vomiting.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; dry mouth; fainting; flushing; heavy sweating; irregular heartbeat; new or worsening chest pain; pale skin; pounding in the chest; rapid heartbeat; severe dizziness or headache; severe or persistent nausea or vomiting; shortness of breath; slow heartbeat; swelling of the hands, ankles, or feet; unusual weakness.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
If OVERDOSE is suspected:
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include cold or blue skin; confusion; diarrhea; excessive sweating; fainting; fast, slow, or irregular heartbeat; persistent throbbing headache; seizures; trouble breathing; vision problems.Proper storage of nitroglycerin patch:
Store nitroglycerin patch at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep nitroglycerin patch out of the reach of children and away from pets.
- If you have any questions about nitroglycerin patch, please talk with your doctor, pharmacist, or other health care provider.
- Nitroglycerin patch is to be used only by the patient for whom it is prescribed. Do not share it with other people.
- If your symptoms do not improve or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information should not be used to decide whether or not to take nitroglycerin patch or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about nitroglycerin patch. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to nitroglycerin patch. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using nitroglycerin patch.
Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.
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