Holonyms (order Anura is a member of...): amphibia; class Amphibia (the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians).olonyms (order Anura is a member of...): amphibia; class Amphibia (the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians).
Cetirizine is not a narcotic. It's belongs to a class of drugs call 2nd generation antihistamines. It's usually used to treat Allergic Rhinitis and Hives. 2 people found this useful.
DRUG CLASS AND MECHANISM: Cetirizine is a non-sedating antihistamine that works by blocking histamine (H-1) receptors on cells. It is similar to the other second generation antihistamines loratadine (Claritin), fexofenadine (Allegra) and azelastine (Astelin).Histamine is a chemical that is responsible for many of the signs and symptoms of allergic reactions, for example, swelling of the lining of the nose, sneezing, and itchy eyes.t is similar to the other second generation antihistamines loratadine (Claritin), fexofenadine (Allegra) and azelastine (Astelin). Histamine is a chemical that is responsible for many of the signs and symptoms of allergic reactions, for example, swelling of the lining of the nose, sneezing, and itchy eyes.