Guidelines for ATC classification and DDD assignment - WHOCC

P02 ANTHELMINTICS
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The anthelmintics are subdivided according to the main type of worms
(i.e. trematodes, nematodes and cestodes) causing the infections.
P02B ANTITREMATODALS
This group comprises drugs mainly used for trematode infections such
as e.g. schistosomiasis. Niclosamide, which is also used in trematode
infections, is classified in P02DA.
The DDDs are based on the treatment of schistosomiasis.
P02BA Quinoline derivatives and related substances
P02BB Organophosphorous compounds
Metrifonate is administered every second week. The DDD is the
dose divided by the dosing interval.
P02BX Other antitrematodal agents
This group comprises agents, which cannot be classified in the
preceding groups.
P02C ANTINEMATODAL AGENTS
This group comprises drugs mainly used for nematode infections.
The DDDs are based on the treatment of different nematode
infections e.g. ascariasis (roundworm) and hookworm infections.
P02CA Benzimidazole derivatives
P02CB Piperazine and derivatives
E.g. diethylcarbamazine is classified in this group.