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

     C03C HIGH-CEILING DIURETICS

     C03D ALDOSTERONE ANTAGONISTS AND OTHER POTASSIUM-SPARING AGENTS

       C03DA Aldosterone antagonists

         C03DA01 Spironolactone

         C03DA02 Potassium canrenoate

         C03DA03 Canrenone

         C03DA04 Eplerenone

         C03DA05 Finerenone

       C03DB Other 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