However, there may be a surge in blood sugar if you have eaten something either along with them or before consuming the drink. However, not all drinks in a day should be
zero calorie drinks or
diet cokes. You should also drink plain water or water with some lemon squeezed into it. What is important is that your HbA1c should be under control. Hope this helps. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you.