The psychiatric-mental health nurse practitioner has just diagnosed a 10-year-old boy with attention deficit-hyperactivity disorder (ADHD). She advises the mother that stimulants are first-line treatment for ADHD. The mother voices her concerns that her son will become "addicted" to the stimulants and this will cause him to have problems with drugs and alcohol later in life. What is the most appropriate response by the PMHNP?