Glucose pills are chewable tablets containing glucose (dextrose), a simple sugar that is rapidly absorbed into the bloodstream. Glucose is the body’s primary source of energy and is especially important for the brain and muscles. Glucose tablets are commonly used as a convenient, fast-acting source of carbohydrate when blood sugar levels become too low.
Glucose is a monosaccharide, meaning it consists of a single sugar molecule that does not need to be broken down extensively before absorption. Glucose tablets are typically formulated to provide a measured amount of carbohydrate per tablet, making them portable and easy to dose compared with foods or drinks containing sugar.
People primarily use glucose pills to quickly raise blood sugar during hypoglycemia (low blood sugar), particularly in people with diabetes who are at risk of low blood glucose from insulin or certain medications. For a conscious person experiencing hypoglycemia, current diabetes guidelines recommend rapidly absorbed glucose, commonly around 15 g of carbohydrate, followed by a blood-glucose recheck after about 15 minutes.