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

   N06 PSYCHOANALEPTICS

   N07 OTHER NERVOUS SYSTEM DRUGS

     N07A PARASYMPATHOMIMETICS

     N07B DRUGS USED IN ADDICTIVE DISORDERS

     N07C ANTIVERTIGO PREPARATIONS

     N07X OTHER NERVOUS SYSTEM DRUGS

       N07XA Gangliosides and ganglioside derivatives

       N07XX Other nervous system drugs

         N07XX01 Tirilazad [DG:DG01007]

         N07XX02 Riluzole

         N07XX03 Xaliproden [DG:DG01008]

         N07XX04 Hydroxybutyric acid [DG:DG00798]

         N07XX05 Amifampridine

         N07XX06 Tetrabenazine

         N07XX07 Fampridine

         N07XX08 Tafamidis [DG:DG01009]

         N07XX10 Laquinimod

         N07XX11 Pitolisant

         N07XX12 Patisiran [DG:DG02955]

         N07XX13 Valbenazine [DG:DG02115]

         N07XX14 Edaravone

         N07XX59 Dextromethorphan, combinations

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS