"my son took generic for about 6 months. his dr actually prescribed it to him to help him sleep. he has adhd combined type with emotion dysregulation. i actually can&#039;t believe it was prescribed to help control adhd behaviors. my son was taking vyvanse during the day then guafacine at night. it made him extremely irritable and tired. i took him off both of the meds. he&#039;s hyper but a whole lot less frustrated that&#039;s for sure"