When reading formula labels, keep in mind that lactose is a naturally occurring sugar found in both breast milk and cow's milk. Regulatory requirements often force manufacturers to label lactose under 'total sugar' or 'added sugar' categories, even though it is not a sweetener added to the product. Many high-quality formulas contain no sugars other than what is found in milk-based ingredients, so it is helpful to look past the label or consult a professional if you are concerned about specific ingredients.