1  Agents affecting nervous system and sensory organs

   11  Agents affecting central nervous system

     111  General anesthetics

     112  Hypnotics and sedatives, anxiolytics

     113  Antiepileptics

       1131  Phenacemides

       1132  Hydantoins

       1133  Oxazolidines

       1134  Barbiturates

       1135  Primidones

       1136  Aminobutyrates

       1137  Sulfonamides

       1139  Others

     114  Antipyretics and analgesics, anti-inflammatory agents

     115  Stimulants

     116  Antiparkinsonian agents

     117  Psychotropics

     118  Common cold drugs

     119  Miscellaneous

   12  Agents affecting peripheral nervous system

   13  Agents affecting sensory organs

   19  Other agents affecting nervous system and sensory organs

 2  Agents affecting individual organs

 3  Agents affecting metabolism

 4  Agents affecting cellular function

 5  Crude drugs and Chinese medicine formulations

 6  Agents against pathologic organisms and parasites

 7  Agents not mainly for therapeutic purpose

 8  Narcotics