Prescription-only Tylenol Elixir for Children hit the market in 1955, sold in a box shaped like a fire engine and proclaiming itself a cure "for little hotheads." The slogan referred to acetaminophen's ability to safely treat fever during the time when prolonged aspirin use was first linked to gastric bleeding. It was the marketing brainchild of Philadelphia chemist Robert McNeil Jr., who died last month at age 94. Article