FDA announced new action to combat the growing problem of abuse and misuse of the opioid-based antidiarrheal medication loperamide (Imodium). In 2016, the FDA warned about life-threatening cardiac events, including QT interval prolongation, torsades de pointes or other ventricular arrhythmias, syncope, and cardiac arrest, with loperamide misuse and abuse. The FDA notes that some individuals...