A ALIMENTARY TRACT AND METABOLISM

 B BLOOD AND BLOOD FORMING ORGANS

 C CARDIOVASCULAR SYSTEM

 D DERMATOLOGICALS

 G GENITO URINARY SYSTEM AND SEX HORMONES

 H SYSTEMIC HORMONAL PREPARATIONS, EXCL. SEX HORMONES AND INSULINS

 J ANTIINFECTIVES FOR SYSTEMIC USE

 L ANTINEOPLASTIC AND IMMUNOMODULATING AGENTS

 M MUSCULO-SKELETAL SYSTEM

 N NERVOUS SYSTEM

   N01 ANESTHETICS

   N02 ANALGESICS

   N03 ANTIEPILEPTICS

   N04 ANTI-PARKINSON DRUGS

   N05 PSYCHOLEPTICS

     N05A ANTIPSYCHOTICS

     N05B ANXIOLYTICS

     N05C HYPNOTICS AND SEDATIVES

       N05CA Barbiturates, plain

       N05CB Barbiturates, combinations

       N05CC Aldehydes and derivatives

       N05CD Benzodiazepine derivatives

       N05CE Piperidinedione derivatives

       N05CF Benzodiazepine related drugs

       N05CH Melatonin receptor agonists

       N05CJ Orexin receptor antagonists

       N05CM Other hypnotics and sedatives

         N05CM01 Methaqualone

         N05CM02 Clomethiazole [DG:DG00923]

         N05CM03 Bromisoval

         N05CM04 Carbromal

         N05CM05 Scopolamine [DG:DG00065]

         N05CM06 Propiomazine [DG:DG00924]

         N05CM07 Triclofos [DG:DG00925]

         N05CM08 Ethchlorvynol

         N05CM09 Valerianae radix

         N05CM10 Hexapropymate

         N05CM11 Bromides

         N05CM12 Apronal

         N05CM13 Valnoctamide

         N05CM15 Methylpentynol

         N05CM16 Niaprazine

         N05CM18 Dexmedetomidine [DG:DG00926]

       N05CX Hypnotics and sedatives in combination, excl. barbiturates

   N06 PSYCHOANALEPTICS

   N07 OTHER NERVOUS SYSTEM DRUGS

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS