L-tryptophan


L–tryp·to·phan

noun \ˈel-ˈtrip-tə-ˌfan\

Definition of L-TRYPTOPHAN

:  the levorotatory form of tryptophan that is a precursor of serotonin and was used formerly as a dietary supplement especially to promote sleep and relieve depression

First Known Use of L-TRYPTOPHAN

1949

L–tryp·to·phan

noun \ˈel-ˈtrip-tə-ˌfan\   (Medical Dictionary)

Medical Definition of L–TRYPTOPHAN

: 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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