How Long Does it Take for ZYRTEC® to Work? The Science Behind Zyrtec’s Fast Relief | ZyrTalk™

Did you know that ZYRTEC® starts to work at hour 1? In this video, scientist Kevin explains how ZYRTEC® gets to work fast to help relieve your worst allergy symptoms. Learn about the science behind histamine - the chemical your body produces that causes you to experience allergy symptoms - and how ZYRTEC® blocks histamine to provide fast and effective allergy symptom relief.
Learn more about antihistamines, such as ZYRTEC®, here: www.zyrtec.com...
Learn more about cetirizine, the active ingredient in ZYRTEC, here: www.zyrtec.com...
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