title: Tryptophan-nicotinamide combination in depression.
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D003863:Depression / Q000097:blood / Q000188:drug therapy*; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009536:Niacinamide / Q000008:administration & dosage / Q000627:therapeutic use*; D014364:Tryptophan / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use*
chemical_list: D009536:Niacinamide; D014364:Tryptophan