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ADHD Medication - Ritalin Ritalin, which is methylphenidate, is effective in managing ADHD symptoms in adults. It can make people feel "up," alert, awake, and filled with a the sense of clarity. ADHD medication works by altering dopamine and norepinephrine, which are two brain chemicals. The majority of ADHD medications are stimulants, such as Ritalin, Concerta, Focalin, and Vyvanse. There are also nonstimulant drugs. Methylphenidate Methylphenidate is a central nervous system stimulant that has beco