Collagen (1 piece)

Choose an unflavored, single-ingredient collagen product; flavored powders, gummies, and ready-to-drink versions may contain added sugars or fast-digesting fillers.

Check the label for sugars, syrups, maltodextrin, dextrose, and large amounts of carbohydrate, and switch products if any are present.

Take collagen with a balanced meal rather than on an empty stomach, pairing it with foods such as chia seeds, plain Greek yogurt, nuts, or non-starchy vegetables.

Reduce the serving size or split it into smaller portions at different times of day, then compare your glucose response.

Avoid mixing collagen into sweet coffee drinks, juice, sweetened oatmeal, or smoothies containing high-sugar ingredients; use water, unsweetened milk alternatives, or plain yogurt instead.

Take a 10–20 minute easy walk after consuming it and discuss persistent or unexpected rises with your clinician, especially if you use glucose-lowering medication.