R – RESPIRATORY SYSTEM
R06 – ANTIHISTAMINES FOR SYSTEMIC USE
R06A – ANTIHISTAMINES FOR SYSTEMIC USE
R06AE – Piperazine derivatives
Cetirizine is an antihistamine and belongs to respiratory system. It is a major metabolite of hydroxyzine, and a racemic selective H1 receptor antagonist.
Used in the treatment of hay fever, allergies, angioedema, and urticaria.
ATC Code R06AE07.