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Nitro-Dur Warnings and Precautions

Prior to using Nitro-Dur patches, tell your healthcare provider about any other medical problems you may have, such as dehydration, low blood pressure, or any allergies. This product can also cause drug interactions, so tell your healthcare provider about any other medications, vitamins, or supplements you are taking. Other precautions and warnings with Nitro-Dur apply to women who are pregnant or breastfeeding.

What Should I Tell My Healthcare Provider?

You should talk with your healthcare provider prior to using Nitro-Dur® (nitroglycerin patch) if you have:
In addition, let your healthcare provider know if you are:
  • Pregnant or thinking of becoming pregnant
  • Breastfeeding.
You should also tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.

Specific Precautions and Warnings With Nitro-Dur

Some warnings and precautions to be aware of prior to using this angina medication include the following:
  • In the event that defibrillation or cardioversion is necessary, the paddles must not be placed over the Nitro-Dur patch, as severe skin burns and damage to the paddles may result. While healthcare providers should already be aware of this problem, this warning is becoming more important as automated external defibrillators (AEDs) become more available in public places. AEDs are designed for use by the general public, not just healthcare providers.
  • Nitro-Dur can sometimes cause dangerously low blood pressure (hypotension). Alcohol or certain other medications can make this worse (see Nitro-Dur Drug Interactions for more information). People who already have low blood pressure or who are dehydrated are particularly at risk for this complication.
  • Nitro-Dur often causes headaches. If this occurs, talk with your healthcare provider. Do not stop using this patch without checking with your healthcare provider first.
  • Nitro-Dur does not work for all types of chest pain (angina). If your chest pain gets worse when you use this product, let your healthcare provider know right away.
  • Some people may be allergic to Nitro-Dur. Let your healthcare provider know if you develop any signs of an allergic reaction, such as:
    • Hives
    • Itching
    • Unexplained swelling
    • Difficulty breathing.
  • This product is a pregnancy Category C medication, which means that it may not be safe for use during pregnancy, although the full risks are currently unknown (see Nitro-Dur and Pregnancy for more information).
  • It is unknown if Nitro-Dur passes through breast milk. Therefore, if you are breastfeeding or plan to start, check with your healthcare provider or your child's healthcare provider before using this patch (see Nitro-Dur and Breastfeeding).
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Nitro-Dur Medication Information

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