Mothers also have to be worried about formula. The Ross Products Division of north Chicago-based Abbott is recalling hundreds of thousands of bottles of infant formula because they might not have enough vitamin C. The recall is for 32-ounce plastic bottles of Similac Alimentum Advance liquid formula and Similac Advance with iron. The bottles are missing a special layer that keeps air out of the bottle. When the oxygen enters the bottle, it causes the level of vitamin c to decrease over time. Consumers with questions can contact Abbott's Ross Products Division at 800-624-3412.