For some kids with attention-deficit/hyperactivity disorder (ADHD), stimulant medications used to control symptoms may keep them from getting the sleep they need, a research review from the University of Nebraska-Lincoln confirms. About 3.5 million children who are diagnosed with ADHD are commonly-prescribed stimulant medications like Ritalin and Adderall. The analysis showed that both methylphenidate drugs like Ritalin and amphetamines like Adderall cause troubled sleep in kids. Via CBS News. Posted November 23, 2015.