Black coffee with sugar free (1 cup)

Avoid drinking black coffee on an empty stomach; have it after or alongside a balanced meal.

Pair coffee with protein and fat, such as eggs, plain Greek yogurt, or a small handful of almonds, to reduce the chance of a rapid glucose drop.

Try a smaller serving, drink it more slowly, or switch to half-caffeinated or decaffeinated coffee; caffeine can affect glucose differently between individuals.

Ensure the coffee is truly unsweetened and avoid sugar-free creamers or syrups that contain ingredients that may affect you.

Drink water before or with coffee, since dehydration and caffeine can worsen light-headed or low-glucose-like symptoms.

If you have shakiness, sweating, confusion, faintness, or repeated low readings, treat it as a potential low-glucose event and discuss it promptly with a clinician, especially if you use glucose-lowering medication.