Children diagnosed with Attention Deficit Hyperactivity Disorder (ADHD) are often prescribed stimulant medications to help manage the condition. But parents may worry about how these medications might change or impact their kid's health. Pediatrician Cindy Gellner, MD, says stimulant medications for ADHD actually claim the highest positive response rate for any mental health diagnosis. Learn what research has shown about how these medications work, why they work, as well as some common side effects and risks for children.