Colief infant drops relief for the symptoms of colic cause: by temporary lactose intolerance 100% natural clinically proven fast acting - works in minutes irish brand for the first few months of life some babies may have difficulty in fully digesting the lactose in milk causing wind, bloating and discomfort. This can be an important factor in some babies with colic. Colief infant drops helps to break down the lactose in a baby's usual milk (Breast milk or infant formula) before the baby is fed, making the milk more easily digestible for baby. Trusted by mums and recommended by healthcare professionals.