treating adhd without medication undiagnosed adhd in adults treatment With Stimulant Medication Stimulant drugs like methylphenidate, (Ritalin Concerta, Ritalin) and amphetamines (lisdexamfetamine, Adderall and Vyvanse) aid adhd symptoms in adults treatment controlling their impulses and focus. Atomoxetine, a nonstimulant medication that increases brain neur...