If the poop is normal and the baby is pleased, but the baby is thin and small, you can give him or her milk powder with a high protein content. If your baby is prone to diarrhea, you should take him or her to the hospital to determine whether there are allergies or lactose intolerance, and then choose a special medical formula based on the doctor's recommendation.

        Frequent colic and discomfort, these babies can eat whey protein, or even hydrolyzed protein, formula with relatively low lactose content. Because it is generally protein and lactose that cause digestive problems.