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ADHD Medication - Concerta Concerta is an ADHD medication containing methylphenidate, the same ingredient in Ritalin. It is a central nerve system stimulant which increases concentration and focus. It also reduces impulsive and hyperactive behavior. It is used for treating ADHD and Narcolepsy. It also acts as an appetite suppressant, which is why some people use it. It is an stimulant Concerta is a potent stimulant used to treat ADHD. It contains methylphenidate which is the same active ingredient as other ADHD