It was just cannabidiol, or CBD.”Īccording to the US Food and Drug Administration, “it is currently illegal to market CBD by adding it to a food or labeling it as a dietary supplement.” Yet several of the tested products containing CBD in the study openly advertised the addition of that compound to their melatonin product, Cohen said. Pieter Cohen, an associate professor of medicine at the Cambridge Health Alliance in Somerville, Massachusetts.Ī jar of gummies might also contain ingredients you didn’t count on, Cohen said: “One of the products that listed melatonin contained no melatonin at all. “One product contained 347% more melatonin than what was actual listed on the label of the gummies,” said study coauthor Dr. Using melatonin for sleep is on the rise, study says, despite potential health harms