Endocrine System Home > Novolin N Warnings and Precautions

Although you do not need a prescription for Novolin N, warnings and precautions for the drug should be discussed with your healthcare provider to ensure safe treatment. You should also let him or her know if you have liver or kidney problems, as they can affect your Novolin N dosage. You should not take Novolin N without your healthcare provider's approval or supervision.

Novolin N: What Should I Tell My Healthcare Provider?

Talk with your healthcare provider prior to taking Novolin® N (NPH insulin) if you have:
  • Liver disease, such as cirrhosis, liver failure, or hepatitis
  • Kidney disease, such as kidney failure (renal failure)
  • Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
  • Breastfeeding
  • Pregnant or thinking of becoming pregnant.
Make sure to tell your healthcare provider about any medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.

Specific Precautions and Warnings for Novolin N

Warnings and precautions to be aware of prior to taking Novolin N include the following:
  • Even though Novolin N is available without a prescription, it should be used only with your healthcare provider's approval and supervision. Using this medication inappropriately can be lethal.
  • Low blood sugar (hypoglycemia) is the most common (and usually most serious) side effect of insulin medications, including Novolin N. Make sure you and those around you know how to identify the warning signs for low blood sugar and how to respond. You must test your blood sugar levels regularly while taking Novolin N or any other insulin. Low blood sugar levels can be a life-threatening problem.
  • Illness and overall health, as well as changes in diet, exercise, or other medications, can affect how much Novolin N you need. Make sure your healthcare provider explains how and when you should make any dosage adjustments.
  • Liver and kidney problems may affect your Novolin N dosage. Also, changes in diet or exercise, illness, or stress may affect your blood sugar levels in such a way that your dosage needs to be adjusted.
  • This diabetes medication can potentially interact with several other medications (see Novolin N Drug Interactions).
  • Make sure your healthcare provider shows you exactly how to inject Novolin N, how to store the drug, and how to dispose of your used needles.
  • Novolin N is considered a pregnancy Category B medication. This means it is most likely safe for use during pregnancy, although the full risks are not known (see Novolin N and Pregnancy).
  • It is not known if Novolin N passes through breast milk. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to taking the drug (see Novolin N and Breastfeeding).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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