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

   L01 ANTINEOPLASTIC AGENTS

   L02 ENDOCRINE THERAPY

     L02A HORMONES AND RELATED AGENTS

       L02AA Estrogens

       L02AB Progestogens

         L02AB01 Megestrol [DG:DG00457]

         L02AB02 Medroxyprogesterone [DG:DG00458]

         L02AB03 Gestonorone

       L02AE Gonadotropin releasing hormone analogues

       L02AX Other hormones

     L02B HORMONE ANTAGONISTS AND RELATED AGENTS

   L03 IMMUNOSTIMULANTS

   L04 IMMUNOSUPPRESSANTS

 M MUSCULO-SKELETAL SYSTEM

 N NERVOUS SYSTEM

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS