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

     N06A ANTIDEPRESSANTS

     N06B PSYCHOSTIMULANTS, AGENTS USED FOR ADHD AND NOOTROPICS

     N06C PSYCHOLEPTICS AND PSYCHOANALEPTICS IN COMBINATION

     N06D ANTI-DEMENTIA DRUGS

       N06DA Anticholinesterases

       N06DX Other anti-dementia drugs

         N06DX01 Memantine [DG:DG00986]

         N06DX02 Ginkgo folium

         N06DX03 Aducanumab

         N06DX04 Lecanemab

         N06DX05 Donanemab

         N06DX06 Blarcamesine [DG:DG03048]

         N06DX07 Hydromethylthionine [DG:DG03014]

         N06DX30 Combinations

   N07 OTHER NERVOUS SYSTEM DRUGS

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS