| ATC codes | 
|---|
| N Nervous system | 
| N01 Anesthetics | 
| N02 Analgesics | 
| N03 Antiepileptics | 
| N04 Anti-parkinson drugs | 
| N05 Psycholeptics | 
| N06 Psychoanaleptics | 
| N07 Other nervous system drugs | 
| ATCvet only | 
| QN51 Products for animal euthanasia | 
|  | 
ATC code N03 Antiepileptics is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the WHO for the classification of drugs and other medical products. Subgroup N03 is part of the anatomical group N Nervous system.
Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QN03.
National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version.