Diabetes mellitus is a group of metabolic diseases characterized by hyperglycaemia (elevated blood glucose concentration) resulting from defects in insulin secretion, insulin action, or both (American Diabetes Association). Besides physical activity and an appropriate medical treatment, nutrition is considered important in diabetes management. Postprandial hyperglycaemia (elevated blood glucose level after having a food or drink) is a major concern in the management of diabetes. Sweeteners like aspartame, acesulfame K and sucralose are widely used as replacements for various types of sugar in food and beverage products such as energy drinks. Individuals with diabetes use products containing these sweeteners to control energy and carbohydrate intake.

Energy drinks are classified as normal foodstuffs and marketed accordingly. Sugar-free energy drinks may be a possible alternative for diabetics. Within the European Union there are no particular standards for the labeling of foods or beverages made for normal consumption with regard to their suitability for diabetics. Albeit, some energy drink producers voluntary label suitable for diabetics. For further information regarding the consumption of energy drinks related to diseases like diabetes, a medical doctor should be consulted.