title: L-tryptophan--a "natural" sedative?
mesh_terms: D003863:Depression / Q000188:drug therapy; D006801:Humans; D006993:Hypnotics and Sedatives; D014364:Tryptophan / Q000009:adverse effects / Q000494:pharmacology*
chemical_list: D006993:Hypnotics and Sedatives; D014364:Tryptophan