Information about Similac Advance Stage 4 Follow-Up Formula (18 to 24 months) Powder Similac Advance Follow-Up Formula Stage 4 Powder is a spray dried infant milk substitute for new born babies from 18 to 24 months. Similac Advance is iron-fortified feeding formula with nutrient composition clinically shown to support infants’ growth and development. Key Ingredients: Whole milk powder, lactose, maltodextrin, edible vegetable oil (soy oil, high oleic sunflower oil, coconut oil), whey protein concentrate, taurine, potassium citrate (acidity regulator), L-carnitine, antioxidant (mixed tocopherols) Ingredients after ... More View