Answer :Actually, we did compute the calories in our example of how to get 5,419 milligrams of potassium from a days worth of meals, but omitted those numbers to avoid reader confusion. Youll be surprised to learn that this potassium plan contains only 1,323 calories. For diabetes patients, the American Diabetes Association recommends getting potassium from food rather than supplements, and suggests Diabetes Superfoods that include these from our sample days meals: spinach, citrus fruits, sweet potatoes, non-fat yogurt, tomatoes, fish, whole grains and fat-free milk.