This information prompted the FDA, in 2005, to adopt a “black box” warning label on all antide pressant medications to alert the public about the potential increased risk of suicidal thinking or attempts in children and adolescents taking antidepressants. In 2007, the FDA proposed that makers of all antidepressant medications extend the warning to include young adults up through age 24. A “black box” warning is the most serious type of warning on prescription drug labeling. The study was funded in part by the National Institute of Mental Health. .