1  Agents affecting nervous system and sensory organs

 2  Agents affecting individual organs

   21  Cardiovascular agents

     211  Cardiotonics

     212  Antiarrhythmic agents

     213  Diuretics

     214  Antihypertensives

     215  Capillary stabilizers

     216  Vasoconstrictors

     217  Vasodilators

       2171  Coronary dilators

       2172  Peripheral artery dilators

       2179  Others

     218  Hyperlipidemia agents

     219  Miscellaneous

   22  Respiratory organ agents

   23  Digestive organ agents

   24  Hormones

   25  Urogenital and anal organ agents

   26  Epidermides

   27  Dental preparations

   29  Other 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