What should I do if my blood sugar is low and I have diabetes?

If you have diabetes and you think your blood glucose is low, do this right away:

1. Test blood glucose if you can. This helps make sure that the symptoms are coming from low blood glucose, not something else.

2. Treat with the "15 - 15" rule if your blood glucose is below target, or you have symptoms of low blood glucose:

  • Take 15 grams of quick-sugar carbohydrate. If the person can't eat, drink, or respond -- or if the person has passed out or is having seizures, it probably means that blood glucose is severely low.
  • Wait 15 minutes after taking a quick sugar source, then recheck blood glucose. If blood glucose is still low, eat another 15 grams of quick-sugar carbohydrate until your blood glucose starts to rise.
3. When blood glucose is back up in your target range, rest for 15 to 20 more minutes before returning to normal activity. If your next meal is more than an hour away, have a snack of peanut butter, cheese, crackers, a meat sandwich, or a glass of milk.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.