Cinnamon is available powdered from most food stores or as capsules from health food stores. Keep cinnamon in a tightly sealed container in the dark. It may be added liberally to food at meals or consumed as a supplement. Cinnamon is generally considered safe, although a recommended dose has not been established. Use cinnamon with caution if you take blood thinners or medication to lower blood glucose, as it may interact with these medicines.
While a small banana would contain about 12 grams of sugar, a medium one would contain around 14 grams, a large one would contain about 17 grams, and an extra large banana would contain about 19 grams of sugar. But this does not mean that diabetics cannot eat bananas.
One large banana (8 to 9 inches long) will have 31 grams effective (net) carbohydrate, 3.5 grams fiber, 17 grams of sugar, and 121 calories. As you can see, that's double the 1/2-cup serving, which is why it's a good idea for low-carb dieters to stick to the smaller amount.