P - Antiparasitic Products, Insecticides and Repellents
The group is subdivided according to types of parasites.
P01 - Antiprotozoals
P01B - Antimalarials
This group comprises drugs mainly used for treatment and prophylaxis of malaria.
The DDDs are based on the treatment of malaria, except for proguanil, which is used for prophylaxis only. For some substances the DDDs are expressed as amount of base. These are indicated in the ATC index.
P01BD - Diaminopyrimidines
The DDD for pyrimethamine is based on combination therapy with a sulphonamide for the treatment of malaria.
