Similac Infant Formula Stage 1 - Upto 6 months - Similac 1 is a spray dried stage 1 infant milk substitute for infants upto 6 months. Neuro-nutrients such as Omega 3 and 6 fatty acids, Choline, Iron, Taurine, Iodine, Folic Acid and Zinc that are known to support baby’s brain development. Vitamin A ,vitamins C & E to support baby’s developing immune system Calcium, Vitamin D and Phosphorus that are known to support baby’s bone development. Vitamins and Minerals support healthy growth and development of the baby.