Cetirizine: Difference between revisions
Created page with "Cetirizine Non Drowsy Antihistamine Marketed under several trade names, including Zyrtec and Allacan. It is also available in combination with pseudoephedrine, where the brand names often include a "-D" suffix, such as Zyrtec-D, Zyrtec-D 12 Hour, All Day Allergy-D, and Allergy Relief D. Cetirizine is classified as a non-drowsy (second-generation) antihistamine, meaning it is less likely to cause sleepiness compared to first-generation antihistamines like diphenhydramin..." |
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Revision as of 07:43, 26 November 2025
Cetirizine Non Drowsy Antihistamine
Marketed under several trade names, including Zyrtec and Allacan. It is also available in combination with pseudoephedrine, where the brand names often include a "-D" suffix, such as Zyrtec-D, Zyrtec-D 12 Hour, All Day Allergy-D, and Allergy Relief D.
Cetirizine is classified as a non-drowsy (second-generation) antihistamine, meaning it is less likely to cause sleepiness compared to first-generation antihistamines like diphenhydramine or chlorphenamine. It works by blocking histamine, a chemical released during allergic reactions that causes symptoms such as sneezing, runny nose, itchy eyes, and skin rashes. Cetirizine typically starts working within an hour and provides 24 hours of relief from allergy symptoms.