My son 24 yrs old just visited a new physician.  He has never taken any prescriptions for ADHD in the past and the new Dr. ordered Methylpenidate.  My son has a history of anxiety and substance abuse.  I am an RN  I dont feel that Methylphenidate is a wise choice.  He is currently taking 150mg Bupropion XL for depression  After reading info on this website it seems that an increase in dosage to 300mg daily might be helpful?
Good day!  You physician made a good choice. Stimulant Chat Doctor.  Discuss other options with him and let him decide what is best for your son. Good luck