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

     L01A ALKYLATING AGENTS

     L01B ANTIMETABOLITES

       L01BA Folic acid analogues

         L01BA01 Methotrexate [DG:DG00681]

         L01BA03 Raltitrexed

         L01BA04 Pemetrexed [DG:DG00682]

         L01BA05 Pralatrexate

       L01BB Purine analogues

       L01BC Pyrimidine analogues

     L01C PLANT ALKALOIDS AND OTHER NATURAL PRODUCTS

     L01D CYTOTOXIC ANTIBIOTICS AND RELATED SUBSTANCES

     L01E PROTEIN KINASE INHIBITORS

     L01F MONOCLONAL ANTIBODIES AND ANTIBODY DRUG CONJUGATES

     L01X OTHER ANTINEOPLASTIC AGENTS

   L02 ENDOCRINE THERAPY

   L03 IMMUNOSTIMULANTS

   L04 IMMUNOSUPPRESSANTS

     L04A IMMUNOSUPPRESSANTS

       L04AA Selective immunosuppressants

       L04AB Tumor necrosis factor alpha (TNF-alpha) inhibitors [DG:DG01936]

       L04AC Interleukin inhibitors [DG:DG02019]

       L04AD Calcineurin inhibitors [DG:DG03129]

       L04AE Sphingosine-1-phosphate (S1P) receptor modulators

       L04AF Janus-associated kinase (JAK) inhibitors

       L04AG Monoclonal antibodies

       L04AH Mammalian target of rapamycin (mTOR) kinase inhibitors

       L04AJ Complement inhibitors

       L04AK Dihydroorotate dehydrogenase (DHODH) inhibitors

       L04AX Other immunosuppressants

         L04AX01 Azathioprine [DG:DG00743]

         L04AX02 Thalidomide

         L04AX03 Methotrexate [DG:DG00681]

         L04AX04 Lenalidomide [DG:DG00744]

         L04AX05 Pirfenidone

         L04AX06 Pomalidomide

         L04AX07 Dimethyl fumarate

         L04AX08 Darvadstrocel

         L04AX09 Diroximel fumarate

 M MUSCULO-SKELETAL SYSTEM

 N NERVOUS SYSTEM

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS