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

       N06BA Centrally acting sympathomimetics

       N06BC Xanthine derivatives

       N06BX Other psychostimulants and nootropics

         N06BX01 Meclofenoxate [DG:DG00975]

         N06BX02 Pyritinol [DG:DG00976]

         N06BX03 Piracetam

         N06BX04 Deanol [DG:DG00977]

         N06BX05 Fipexide

         N06BX06 Citicoline [DG:DG00978]

         N06BX07 Oxiracetam

         N06BX08 Pirisudanol [DG:DG00979]

         N06BX09 Linopirdine

         N06BX10 Nizofenone [DG:DG00980]

         N06BX11 Aniracetam

         N06BX12 Acetylcarnitine

         N06BX13 Idebenone

         N06BX14 Prolintane

         N06BX15 Pipradrol

         N06BX16 Pramiracetam [DG:DG00981]

         N06BX17 Adrafinil

         N06BX18 Vinpocetine

         N06BX21 Temgicoluril

         N06BX22 Phenibut

     N06C PSYCHOLEPTICS AND PSYCHOANALEPTICS IN COMBINATION

     N06D ANTI-DEMENTIA DRUGS

   N07 OTHER NERVOUS SYSTEM DRUGS

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS