Anatomical Therapeutic Chemical • S • Sensory organs

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, excluding 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

S01 Ophthalmologicals

S02 Otologicals

S03 Ophthalmological and otological preparations

V Various