Psychosis during Methylphenidate Abuse

Abstract
METHYLPHENIDATE (Ritalin), discovered in 1954 by Meier1 and others, has been recommended for a variety of maladies.2 , 3 Little attention has been paid to its abuse potential in this country although as early as 1960, Rioux4 raised the question of its "addiction potential" in a report on a patient who was taking 125 tablets of methylphenidate daily. The Scandinavian literature contains several reports of abuse.5 6 7 8 Use of oral methylphenidate in the United States is widespread. Its prescription for children with behavior problems and the "hyperkinetic syndrome" has reached large proportions. Earlier reports on the use of oral methylphenidate indicated little potential . . .

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