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A member asked:

How long does zyrtec (cetirizine) take to work?

A doctor has provided 1 answer
Dr. Michael Zacharisen answered

Specializes in Allergy and Immunology

About 1 hour: Onset of relief with zyrtec (cetirizine) is about 1 hour.

Dr Chiu agreed

Answered 10/7/2018

4.5k views

Thank

Related Questions

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Zyrtec, claritin, singular, and allegra don't work on my 7 yr olds allergies at night (nasal drip & cough) only benedryl. Can he take it every night?

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Why is my nose always stuffy. im allergy to dust & ragweed . i take zyrtec , singular , saline spray now i tryed flonaze and my nose is still stuffy??? what will work ??

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Dry cough clearing throat most of the day at work and out side when I take zyrtec (cetirizine) it works for about 6 hours what can else u can do what's causin?

3 doctors weighed in across 2 answers

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Referred to ENT for possible ETDappt many weeks away. Tinnitus, stuffy ears, off-balance feeling, headache. Brain MRI ruled out serious conditions. In meantime, can I take OTC med to unclog ears? How long would Zyrtec or similar take to work?

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I have a swollen lymph node below my ear. I take Flonase and Zyrtec. The doc wants to refer me to an ent if amox doesn't work. What could this be?

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