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Drug Interactions

Narcan may react with a few other medicines (see Narcan Drug Interactions).

Important Information for Your Healthcare Provider

Talk with your healthcare provider prior to using Narcan if you have:
  • Been taking opioid medicines, either for a medical or nonmedical reason
  • Been using illegal or street drugs
  • Liver disease, such as cirrhosis, liver failure, or hepatitis
  • Kidney disease, such as kidney failure (renal failure)
  • Heart disease
  • Any allergies, including to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
Make sure to tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
(Click Narcan Warnings and Precautions to learn more, including information on who should not receive the drug.)

What If I Overdose on Narcan?

It is not entirely clear what to expect from an overdose with this medicine. Seek immediate medical attention if you or someone else may have taken too much Narcan.
(Click Narcan Overdose for more information.)

How Should This Medication Be Stored?

Narcan will be stored by your healthcare provider at room temperature, protected from light. Keep this and all other medications out of the reach of children and pets.
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Narcan Medication Information

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