Many adults have ADHD without ever being diagnosed. It's important to recognize the signs so you can get proper treatment. Keep reading to learn about. May 30, - Stimulants such as Adderall, Concerta, Focalin, Vyvanse, Quillivant, and Ritalin in long-acting form are often prescribed for symptoms. Strattera, a nonstimulant approved for treatment of adult ADHD, is also widely prescribed, he says.