A 42-year-old member asked:

Is zyrtec and levocetirizine the same medications?

1 doctor answer1 doctor weighed in
Dr. John Chiu
Allergy and Immunology 59 years experience
Levo is more pure: Zyrtec contains both levocetirizine and an inactive mirror-image counterpart. Thus mg for mg , levocetirizine is more potent.
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Last updated Mar 16, 2021


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