A ALIMENTARY TRACT AND METABOLISM

 B BLOOD AND BLOOD FORMING ORGANS

 C CARDIOVASCULAR SYSTEM

   C01 CARDIAC THERAPY

   C02 ANTIHYPERTENSIVES

   C03 DIURETICS

     C03A LOW-CEILING DIURETICS, THIAZIDES

     C03B LOW-CEILING DIURETICS, EXCL. THIAZIDES

       C03BA Sulfonamides, plain

         C03BA02 Quinethazone

         C03BA03 Clopamide

         C03BA04 Chlortalidone

         C03BA05 Mefruside

         C03BA07 Clofenamide

         C03BA08 Metolazone

         C03BA09 Meticrane

         C03BA10 Xipamide

         C03BA11 Indapamide

         C03BA12 Clorexolone

         C03BA13 Fenquizone

         C03BA82 Clorexolone, comb. with psycholeptics

       C03BB Sulfonamides and potassium in combination

       C03BC Mercurial diuretics

       C03BD Xanthine derivatives

       C03BK Sulfonamides, combinations with other drugs

       C03BX Other low-ceiling diuretics

     C03C HIGH-CEILING DIURETICS

     C03D POTASSIUM-SPARING AGENTS

     C03E DIURETICS AND POTASSIUM-SPARING AGENTS IN COMBINATION

     C03X OTHER DIURETICS

   C04 PERIPHERAL VASODILATORS

   C05 VASOPROTECTIVES

   C07 BETA BLOCKING AGENTS

   C08 CALCIUM CHANNEL BLOCKERS

   C09 AGENTS ACTING ON THE RENIN-ANGIOTENSIN SYSTEM

   C10 LIPID MODIFYING AGENTS

 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

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS