A nurse is providing teaching to the parent of a child who has a new prescription for methylphenidate. Which of the following instructions should the nurse include?

A. "Monitor your child for excessive sleepiness." Methylphenidate is a stimulant, so it more commonly causes insomnia or restlessness, not sleepiness. B. "Administer the medication with a caffeinated beverage." Caffeine is also a stimulant and can increase side effects such as jitteriness and increased heart rate. C. "Administer the second dose of the medication at lunch time." The second dose is typically given at lunch to avoid late-day administration, which could cause insomnia. D. "Monitor your child for weight gain." Methylphenidate can cause weight loss due to appetite suppression, so weight gain is not expected.