Depending on their age, babies need different formulas with a varied composition for their development. Breast milk adapts automatically and perfectly to the baby's requirements throughout the entire breastfeeding period. Stage 1 infant formula is suitable for babies from birth for exclusive feeding or as a supplement. As with breast milk, the only carbohydrate it contains is milk sugar (lactose). In addition, Stage 1 infant formula contains a legally determined amount of protein, fat, carbohydrates, vitamins and minerals to ensure the baby's nutrient supply. Stage 1 infant formula is thin like breast milk and, in the first few months, can be given "ad libitum," which means as often and as much as the baby demands.