Anatomical Therapeutic Chemical (ATC) classification [BR:br08303]
N NERVOUS SYSTEM
N06 PSYCHOANALEPTICS
N06A ANTIDEPRESSANTS
N06AX Other antidepressants
N06AX02 Tryptophan
D00020 Tryptophan (USP/INN)
Risk category of Japanese OTC drugs [BR:br08312]
Third-class OTC drugs
Inorganic and organic chemicals
L-Tryptophan
D00020 Tryptophan (USP/INN)
Drugs listed in the Japanese Pharmacopoeia [BR:br08311]
Chemicals
D00020 L-Tryptophan