A pediatricians group is warning powdered drink mixes known as “toddler milks” are unregulated, unnecessary and nutritionally incomplete. The drinks are marketed for older babies and toddlers up to age 3. The American Academy of Pediatrics says the products often contain high amounts of added sugar and salt. A trade group for the manufacturers of the products say the drinks could fill nutritional gaps. Experts say babies and toddlers older than age 1 should eat a balanced diet of solid foods and drink breast milk, fortified whole cow's milk and water.