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Methylphenidate, brand name Ritalin, is an amphetamine-like central nervous system stimulant used to treat attention-deficit hyperactivity disorder (ADHD) in children, adolescents, and adults, as well as narcolepsy. 1 It is a Schedule II controlled substance.
You should not use Ritalin if you are allergic to it, or if you have: 1  glaucoma; 2  a personal or family history of tics (muscle twitches) or Tourette's syndrome; or. 3  severe anxiety, tension, or agitation (stimulant medicine can make these symptoms worse).