As soon as early symptoms occur, eat 15-20 grams of sugar or drink 200 ml of fruit juice or milk. If the symptoms don't disappear within 10 minutes, eat an additional 15-20 grams and, if possible, measure your blood sugar. Follow this with some slowly digested carbohydrates like bread. If you experience such symptoms and do not eat sugar tablets (or some similar source of sugar like fruit juice or milk) you could lose consciousness.

In general, there is little risk involved in hypoglycaemia. Even if you do become unconscious, your body will mobilise a number of hormones to help your liver release glucose into your blood. In severe cases of hypoglycaemia, it may be necessary for a friend or relative to call a doctor, who will inject either glucagon (one of the hormones that helps the liver release sugar) or a solution of sugar into your blood.