Methylphenidate (Ritalin) is a psychostimulant drug approved for treatment of ADHD or attention-deficit hyperactivity disorder, postural orthostatic tachycardia syndrome and narcolepsy. The original patent was owned by CIBA, now Novartis Corporation). It was first licensed by the FDA in 1955 for treating ADHD, prescribed from 1960, and became heavily prescribed in the 1990s, when the diagnosis of ADHD itself became more widely accepted.
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