Quite a few of these formulas are used to ease the symptoms of a colicy baby. An infant has an underdeveloped digestive tract and has a hard time breaking down many of the acids and proteins that a child or an adult obviously can. With a lower lactose based formula, we can introduce and provide trace amounts of the bacteria that a child will need to have a healthier and stronger immunity to lactose in the future. This will prevent dairy and environmental allergies, as well as a possible gluten intolerance.