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This group comprises preparations used in the treatment of epilepsy.
Combined preparations are classified at separate 5th levels using the corresponding 50-series.
The group is subdivided according to chemical structure.

Barbiturates used mainly as hypnotics/sedatives are classified in N05C - Hypnotics and sedatives.
Phenobarbital, which is used both as an antiepileptic and as a sedative, is classified in this group.
Combinations with phenytoin are classified in N03AB.

ATC code	Name	DDD	U	Adm.R	Note
N03AA01	methylphenobarbital	0.5	g	O
N03AA02	phenobarbital	0.1	g	O
		0.1	g	P
N03AA03	primidone	1.25	g	O
N03AA04	barbexaclone
N03AA30	metharbital	0.2	g	O

List of abbreviations