Diabetics can drink sugar-free cola in moderation, but it’s still not really recommended. Diabetes mellitus is a chronic disease caused by defects in insulin secretion and/or utilization, with clinical manifestations such as hyperglycemia, increased food intake, weight loss, and increased water intake and urine output. Sugar-free colas contain sweeteners instead of added sugar, and can be consumed in moderation by diabetics to quench their thirst, but it is still not highly recommended to consume sugar-free colas, which may lead to elevated blood sugar. Sugar-free cola contains caffeine, citric acid, etc. Excessive consumption may lead to digestive discomfort and affect oral health. Diabetic patients should arrange their diet and treatment under the guidance of their doctors.