Vitamin c (1 piece)

Check the Vitamin C product label for added sugar, glucose, sucrose, dextrose, syrup, or sweetened chewable/gummy forms; choose an unsweetened capsule, tablet, or powder instead.

Take Vitamin C with a balanced meal rather than on an empty stomach, such as eggs with vegetables, plain Greek yogurt with chia seeds, or lentils with salad.

Avoid dissolvable flavored Vitamin C drinks and effervescent tablets if they contain sugar or carbohydrate fillers; use plain water with an unflavored product.

Split a larger dose into smaller amounts taken with meals, if appropriate for your needs and the product directions.

Pair fruit-based Vitamin C sources with protein or fat—for example, berries with plain Greek yogurt or an orange alongside a small handful of nuts—to slow the glucose rise.

Track the timing and amount of the supplement and your readings; if rises persist despite using an unsweetened form, discuss it with your clinician or diabetes care team.