Medical Dictionary

L–tryptophan

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noun L–tryp·to·phan \ˈel-ˈtrip-tə-ˌfan\

Medical Definition of L–tryptophan

  1. :  the levorotatory form of tryptophan that is a precursor of serotonin and was formerly used in some health food preparations in the belief that it promoted sleep and relieved depression—see eosinophilia-myalgia syndrome


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