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

     N02A OPIOIDS

     N02B OTHER ANALGESICS AND ANTIPYRETICS

       N02BA Salicylic acid and derivatives

       N02BB Pyrazolones

         N02BB01 Phenazone

         N02BB02 Metamizole sodium [DG:DG00827]

         N02BB03 Aminophenazone

         N02BB04 Propyphenazone

         N02BB05 Nifenazone

         N02BB51 Phenazone, combinations excl. psycholeptics

         N02BB52 Metamizole sodium, combinations excl. psycholeptics

         N02BB53 Aminophenazone, combinations excl. psycholeptics

         N02BB54 Propyphenazone, combinations excl. psycholeptics

         N02BB71 Phenazone, combinations with psycholeptics

         N02BB72 Metamizole sodium, combinations with psycholeptics

         N02BB73 Aminophenazone, combinations with psycholeptics

         N02BB74 Propyphenazone, combinations with psycholeptics

       N02BE Anilides

       N02BF Gabapentinoids

       N02BG Other analgesics and antipyretics

     N02C ANTIMIGRAINE PREPARATIONS

   N03 ANTIEPILEPTICS

   N04 ANTI-PARKINSON DRUGS

   N05 PSYCHOLEPTICS

   N06 PSYCHOANALEPTICS

   N07 OTHER NERVOUS SYSTEM DRUGS

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS