During the first two years of life, baby’s digestive system needs to adapt to the new environment, a natural process that may lead to baby’s discomfort such as colic, excess crying, and constipation. Nestlé LACTOGEN 4 is a spray dried Follow-Up formula for older infants after 18 months upto 24 months when they are not breastfed, develops infant nutrition products backed by evolving science and research.