A 9-year-old child has been successfully treated with methylphenidate for attention- deficit hyperactivity disorder (ADHD) for several years. During the last 2 months, the
medication has not been as effective despite several dose adjustments. It is decided that
the child needs a different medication. Which of the following would be the best choice?
A. Buspirone
B. Atomoxetine
C. Desipramine
D. Risperidone
E. Mixed amphetamine salts