A high number of teens and young adults with an overdose involving a benzodiazepine (BZD), like Xanax, or psychostimulant, like Adderall – medications commonly used to treat mental health issues like attention deficit hyperactivity disorder and anxiety disorders – have a recent medical prescription for a BZD or stimulant, according to Rutgers researchers who say physicians need to weigh the risks and benefits of these medications more closely.