Similac Isomil Advance Infant Formula Ready To Feed Bottles is an easy to digest soy formula for common feeding problems such as fussiness, gas and spit up. DHA and ARA, special nutrients found in breast milk that are important for brain and eye development. Milk Free. Lactose Free. For fussiness, gas and spit up.Provides calcium for your baby's growing bones.Supports excellent growth during your baby's first year.Filled by volume to 1 Quart. Extra space in bottle allows for shaking and easy pouring. Breast milk is recommended. If you choose to use infant formula, the makers of Similac have a formula that's right for your baby.