Precautions
Drug information provided by: Merative, Micromedex®
If you will be using this medicine for a long time, it is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Do not use this medicine if you take riociguat (Adempas®), sildenafil (Viagra®), tadalafil (Cialis®), or vardenafil (Levitra®). Using one of these medicines while treated with nitroglycerin may cause severe drops in blood pressure, blurred vision, dizziness, lightheadedness, or fainting. If you are taking these medicines and you experience an angina attack, you must go to the hospital right away.
This medicine may cause headaches. These headaches are a sign that the medicine is working. Do not stop using the medicine or change the time you use it in order to avoid the headaches. Ask you doctor if you can take aspirin or acetaminophen to treat the headache.
Dizziness, lightheadedness, or faintness may occur, especially when you get up quickly from a lying or sitting position. Getting up slowly may help.
Dizziness, lightheadedness, or fainting is also more likely to occur if you drink alcohol, stand for long periods of time, exercise, or if the weather is hot. While you are using this medicine, be careful to limit the amount of alcohol you drink. Also, use extra care during exercise or hot weather or if you must stand for long periods of time.
Do not stop using this medicine without checking with your doctor first. Your doctor may want you to gradually reduce the amount you are using before stopping it completely.
Tell the doctor in charge that you are using this medicine before having a magnetic resonance imaging (MRI) scan. Skin burns may occur at the site where the patch is worn during this procedure. Ask your doctor if the patch should be removed before having an MRI scan. You might need to put on a new patch after the procedure.
Portions of this document last updated: Feb. 01, 2024
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