A Case Report of Methylphenidate-Induced Dyskinesia

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Sir: As previously described in the Companion,1 an evergrowing number of Americans seek alternative therapies for their medical problems. Among those alternative therapies is the use of herbal medicines, substances that can elicit changes in mood, cognition, and behavior.2 S-adenosylmethionine (SAMe) is a natural substance found in all human cells that is involved in methylation reactions such as gene expression and neurotransmitter synthesis, among others.3

Primary Care Companion J Clin Psychiatry 2002;4(4):159 [letter]