Similac Advance Follow-Up Formula Stage 3 Powder is used to support healthy growth and nutrition in infants aged 12 to 18 months during and after the weaning period. It helps provide essential nutrients needed for brain development, strong bones, and overall physical growth. The formula includes omega fatty acids, vitamins, and minerals that assist in closing nutritional gaps when solid foods alone are not enough. It supports easier digestion and helps maintain healthy development as the baby grows.