Sugar-free Coca-Cola is usually not recommended for diabetic patients. Diabetes mellitus is an endocrine disorder disease due to absolute or relative deficiency in insulin secretion and/or impaired utilization, which is mainly manifested by elevated blood glucose. Therefore, it is important to have enough control in diet to control the level of blood glucose. Although sugar-free Coca-Cola does not contain sugar, but it contains sweeteners, although it will not have a greater impact on blood glucose, but too much intake will cause bad effects, and it will also increase the patient’s dependence on sweets, affecting the control, so it is not recommended to drink sugar-free Coca-Cola. Diabetic patients with more knowledge of healthy eating, you can consult a professional nutritionist.