tired young malay woman holding on to the sides of her head and looking downards while closing her eyes

A dip in your blood glucose (sugar) to below 4 mmol/L usually occurs when you skip a meal or do not eat enough food, take too much medications, or are more active than usual.

If low blood glucose or hypoglycaemia is not treated immediately, you may start to have a fit or even faint. In serious cases, it leads to coma and death.

What to Look Out For?

what to look out for

When you have low blood glucose you may experience one or more of these symptoms:

  • giddiness

  • weakness or fatigue

  • headache

  • sweatiness

  • hunger

  • nervousness

  • blurry vision

  • irritability

Not everyone experiences the same symptoms. Therefore, it is important to listen to your body and do a check when you suspect that your blood glucose is too low.

Related: Blood Glucose Monitoring

What to Do?

what to do with low blood glucose

  • Check your blood glucose right away. If it is below 4 mmol/L, eat or drink some fast-acting carbohydrates immediately. If you can’t check it for any reason, you should still eat some sugary snacks to be on the safe side.

  • Sugar or sugary snacks which you can eat:
    • 1 tablespoon (3 small packets) of sugar

    • 1 tablespoon of honey

    • 2 tablespoons of raisins

    • 120 ml (half a glass) of fruit juice

    • 120 ml (half a glass) of soft drink

  • Check your blood sugar after 15 to 20 minutes. If it is still below 4 mmol/L, eat another serving of sugary snacks. Once your blood glucose is back to normal, eat a small snack (e.g. energy bar or apple) if your next meal is more than an hour or two away.

Related: How to Use a Glucose Meter

When to Seek Help?

If your blood glucose continues to be low in spite of sugar intake, see a doctor right away.

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