Enlarge / A Diamond Shruumz chocolate bar, which comes in a variety of flavors. (credit: diamondshruumz.com) The US Food and Drug Administration has identified a synthetic psychedelic compound as well as compounds from a potentially toxic plant in the Diamond Shruumz-brand microdosing candies linked to a growing number of severe illnesses nationwide that have included seizures, intubation, and admissions to intensive care units. As of June 25, the case total has grown to 39, including 23 hospitalizations, across 20 states, the FDA and the Centers for Disease Control and Prevention reported. It remains unclear what is in the candies and what may be causing the severe illnesses.