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ADHD Medication - Concerta Concerta is an ADHD medication that contains methylphenidate. It is the same ingredient in Ritalin. It is a central nervous system stimulant that increases focus and concentration. It also reduces impulsive as well as hyperactive behavior. It is used for treating ADHD and Narcolepsy. It is a powerful appetite suppressant, which is why it is abused by some people. It