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ADHD Medication - Concerta Concerta is an ADHD medication, contains methylphenidate. It is the same drug that is Ritalin. It is a stimulant to the central nervous system that improves focus and concentration. It also reduces hyperactive and impulsive behavior. It is used for treating ADHD and narcolepsy. It is also a powerful appetite suppressant, which is the reason certain people take it. It is a stimulant Concerta is a powerful stimulant that is used to treat AD