Kosher l'Pesach baby formula is sold in kosher stores. In cases where this cannot be used, the following are approved. Please note that unless specified otherwise, the listing refers to baby milk powders.
Separate utensils should be used as baby milks, including Kosher l'Pesach baby formula, commonly contain kitniyot. Since feeding bottles normally come into contact with chametz, it is recommended to purchase new ones for Passover.