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Side Effects of Insulin Aspart

Skin reactions and skin thickening at the injection site are potential side effects of insulin aspart. If the medication is given by IV, it may also cause low blood potassium. While most insulin aspart side effects are mild, some are potentially serious and should be reported to a healthcare provider immediately, including an allergic reaction or any symptoms of low blood sugar.

An Introduction to Insulin Aspart Side Effects

As with any medicine, side effects are possible with insulin aspart (NovoLog®). However, not everyone who takes the drug will experience side effects. In fact, many people tolerate it quite well. If side effects do occur, they are often minor and either require no treatment or can easily be treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with insulin aspart. Your healthcare provider can discuss a more complete list of insulin aspart side effects with you.)

Serious Side Effects of Insulin Aspart: Warning Signs

Some side effects with insulin aspart are potentially serious and should be reported immediately to your healthcare provider. Some of the warning signs of these serious side effects include:
  • Signs of an allergic reaction, such as:


    • An unexplained rash
    • Hives
    • Itching
    • Swelling of the mouth or throat
    • Wheezing or other difficulty breathing


  • Symptoms of low blood sugar, such as:


    • Difficulty speaking
    • Sweating
    • Dizziness
    • Changes in behavior, such as irritability or mood swings
    • Loss of coordination
    • Cold sweats
    • Shakiness
    • Extreme hunger
    • Blurry vision
    • Confusion
    • Seizures
    • Unconsciousness.


Make sure those around you know how to recognize your particular signs of low blood sugar, since you may be too confused (due to low blood sugar) to recognize and adequately respond to low blood sugar. Different people may have different signs of low blood sugar.
Diabetes Tips for Seniors

Information on Insulin Aspart

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