Hospitals and surgery can be especially frightening for children, and to help lessen young patients' anxiety, one drug company has been experimenting with sedative "lollipops." The U.S. Food and Drug Administration (FDA) gave the go-ahead to further testing of sweet-tasting fentanyl suckers on children, despite protests from a consumer health group that the lollipop form will give kids the idea that drugs are candy. Fentanyl, a widely used narcotic anesthetic agent, is 200 times more potent than morphine.