If you've got a baby in the neonatal intensive care unit, your first thought is probably not, "Does my child really need that antireflux medication?" But antireflux meds in for newborns topped the list of five overused tests or treatments released Monday as part of the "Choosing Wisely" program. About one-third of health care spending in the United States is overuse and waste, costing about $2.7 trillion a year. "With newborns, there's very little evidence that routine use will improve the symptoms," says DeWayne Pursley, chief neonatologist at Beth Israel Deaconess Medical Center and senior author on the paper, which was published in Pediatrics.