Milk-based. DHA/ARA. Organic. Must add water. Makes 16 - 4 oz bottles. No. 1 brand fed in hospitals. Complete nutrition for your baby's 1st year. Easy mixing for the perfect bottle. Closer than ever to breast milk. Early Shield: immune support, strong bones, brain & eye. If you choose to use infant formula, the makers of Similac have a formula that's right for you. Similac formulas for every baby's nutritional needs. 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 you. Use by date on bottle. Similac Advance may soften stools to be more like those of the breast-fed infant's. Our feeding expert hotline is available to help you with any feeding issues: 800-986-8800.