What to Do When Your Blood Sugar Level Is Dangerously Low

23 Aug 2025

What to Do When Your Blood Sugar Level Is Dangerously Low Low blood sugar, or hypoglycemia, is a serious condition that requires immediate attention. ...

What to Do When Your Blood Sugar Level Is Dangerously Low

Low blood sugar, or hypoglycemia, is a serious condition that requires immediate attention. It can happen to anyone, but is particularly common in people with diabetes. Knowing what to do when your blood sugar drops too low can be the difference between a minor inconvenience and a life-threatening emergency. This guide provides essential information and steps to take when facing dangerously low blood sugar.

Recognizing the Signs: Symptoms of Low Blood Sugar

The first step in addressing low blood sugar is recognizing the symptoms. These can vary from person to person, but common signs include:

Related reading: The Beginner S Guide To Understanding Your A1C Blood Sugar

  • Shakiness or Tremors: An initial and frequent response to a drop in glucose.
  • Sweating: Often accompanied by cold, clammy skin.
  • Dizziness or Lightheadedness: A feeling of instability or near fainting.
  • Confusion or Difficulty Concentrating: Trouble thinking clearly or remembering things.
  • Rapid Heartbeat: The heart races to compensate for the lack of glucose.
  • Weakness or Fatigue: A general feeling of exhaustion.
  • Irritability or Mood Changes: Becoming easily frustrated or agitated.
  • Headache: A throbbing or dull pain in the head.
  • Blurred Vision: Difficulty seeing clearly.
  • Seizures: In severe cases, a loss of consciousness and involuntary muscle contractions.

The "Rule of 15": Your First Response

The "Rule of 15" is the standard, go-to treatment for hypoglycemia. Here's how it works:

  1. Check Your Blood Sugar: If possible, use a glucose meter to confirm the low reading.
  2. Consume 15 Grams of Fast-Acting Carbohydrates: This can include:
    • 4 ounces (1/2 cup) of juice (not diet)
    • 4 ounces (1/2 cup) of regular soda (not diet)
    • 1 tablespoon of honey or sugar
    • Hard candies (about 3-4 pieces)
    • Glucose tablets (follow package instructions)
  3. Wait 15 Minutes: Allow the carbohydrates time to be absorbed into your bloodstream.
  4. Recheck Your Blood Sugar: After 15 minutes, test your blood sugar again.
  5. Repeat if Necessary: If your blood sugar is still below your target range (typically below 70 mg/dL, but follow your doctor's specific recommendations), repeat the "Rule of 15."
  6. Once Above Range: Once your blood sugar is above the target range, eat a snack containing protein and carbohydrates to help stabilize your levels and prevent a recurrence (e.g., crackers with peanut butter, cheese and apple slices).

When to Seek Emergency Help

While the "Rule of 15" is usually effective, there are situations that require immediate medical attention:

  • Unconsciousness: If the person is unable to swallow or is unresponsive, do not attempt to give them anything by mouth.
  • Seizures: If the person is having seizures.
  • Severe Confusion: If the person is extremely disoriented and unable to recognize you or their surroundings.
  • Failure to Respond: If the "Rule of 15" does not raise blood sugar levels after repeated attempts.
  • Medical Alert: If the person wears a medical alert bracelet or necklace indicating a condition requiring special care, follow the instructions provided.

Related reading: The A1C To Blood Sugar Connection Everything You Need To Know

In these emergency situations, call 911 immediately. Be prepared to provide the 911 operator with information about the person's condition, any medications they are taking, and their medical history.

Preventing Future Episodes

While responding to low blood sugar is crucial, preventing future episodes is equally important. Consider these preventive measures:

  • Regular Blood Sugar Monitoring: Check your blood sugar levels as recommended by your doctor.
  • Medication Management: Take your diabetes medications as prescribed.
  • Meal Planning: Eat regular meals and snacks, avoiding skipped meals.
  • Carbohydrate Counting: Learn to accurately count carbohydrates in your meals.
  • Exercise Planning: Discuss exercise plans with your doctor and adjust medication or carbohydrate intake as needed.
  • Carry Fast-Acting Glucose: Always have a source of fast-acting glucose readily available.
  • Educate Others: Inform family, friends, and coworkers about your condition and what to do in case of a hypoglycemic episode.

Related reading: Normal Blood Sugar After Eating What To Expect And When To Worry

Disclaimer: This information is for general knowledge and informational purposes only, and does not constitute medical advice. It is essential to consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.