Anatomical Therapeutic Chemical (ATC) classification [BR:br08303] N NERVOUS SYSTEM N05 PSYCHOLEPTICS N05C HYPNOTICS AND SEDATIVES N05CM Other hypnotics and sedatives N05CM01 Methaqualone D00557 Methaqualone (JAN/USAN/INN) Drug groups [BR:br08330] Neuropsychiatric agent DG01567 GABA-A receptor agonist D00557 Methaqualone Narcotics and psychotropics in Japan [br08308.html] D00557