A nurse is reinforcing teaching with the parents of a child who has ADHD and is taking methylphenidate. Which of the following statements by the parents indicates that the medication is effective?

A. "Our child has a better grasp of reality.": This is not the primary goal of methylphenidate. While it may help with focus and attention, the medication's goal is to improve concentration and reduce hyperactive behaviors in children with ADHD, not directly influence their grasp of reality. B. "Our child is able to complete his homework on time.": This is correct. Methylphenidate, a stimulant used to treat ADHD, helps improve attention, focus, and impulse control. A child who can complete homework on time demonstrates improved attention and task completion, which is the desired outcome. C. "Our child has lost some weight since his last appointment.": While weight loss can be a side effect of methylphenidate, it is not an indicator that the medication is effective. The goal is to manage ADHD symptoms, not necessarily to cause weight loss. D. "Our child has increased his daily caloric intake.": This is incorrect. A common side effect of methylphenidate is decreased appetite, so an increase in caloric intake would not be expected.