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Doctor insights on: Zyrtec Backlash

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Is it okay to take 20 mg zyrtec/ daily?

Is it okay to take 20 mg zyrtec/ daily?

Probably: Although the usual dose of zyrtec (cetirizine) for an adult is 10 mg daily, under the direction of a physician, some patients may need more. It would be important to discuss the dosing with your physician as another approach to treatment may be indicated. Avoid drinking alcohol and be aware that drowsiness may be more likely at higher doses. ...Read more

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Dr. John Chiu
542 doctors shared insights

Cetirizine (Definition)

Ceftirizine is the generic name of an antihistamine previously marketed under the ...Read more


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Does crushing a Zyrtec pill make it less effective?

Does crushing a Zyrtec pill make it less effective?

No, it's bitter: When you chew or crush the tablet of cetirizine (Zyrtec) it does get into your system a little bit quicker but it doesn't reduce the effective time. It should still give you antihistamine effect for 24 hours. ...Read more

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I accidentally took an expired (18 months ago!) Zyrtec pill. Should I take the correct (unexpired) one nowbad well or should I wait 24 hours?

Wait: Medication can lose it's effectiveness past expiration date, but I would not expect it to not be effective at all; especially if only 18 months expired. It will not be harmful at all that you took an expired zyrtec. It will probably still be almost as effective as it was prior to expiration, so I would just wait and take a new one at your normal time the next day. Hope this helps! ...Read more

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Zyrtec vs cetirizine?

Zyrtec vs cetirizine?

Same and different: Both one and same thing antihitamine once a day pill generic vs no generic, both over the counter. Should be taken at night as it can make you sleepy. Try not to take every day every pill has side effects. ...Read more

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What is zyrtec (cetirizine) used for?

What is zyrtec (cetirizine) used for?

Allergies and hives: Zyrtec (cetirizine) is a new generation antihistamine that is FDA approved for relieving the symptoms of :: Seasonal Allergic rhinitis (hay fever) from pollen in patients over 2 years old Perennial allergic rhinitis: year round allergies in patients over 6 months old Chronic Urticaria (hives) in those over 6 months old It has been shown to prevent itching and decrease size of mosquito bites! ...Read more

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What are the ingredients of zyrtec (cetirizine)?

What are the ingredients of zyrtec (cetirizine)?

Cetirizine (active): The active ingredient does the work. Pills may also contain preservatives, food dyes, stabilizers, and a coating. ...Read more

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How to open package zyrtec-d?

How to open package zyrtec-d?

Carefully: Open it very carefully according to the instructions on the box. Otherwise, return to pharmacy and ask them to show you how to open the package. ...Read more

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How long for zyrtec (cetirizine) to work?

About 1 hour: The onset of action for zyrtec (cetirizine) to clinically improve symptoms is about 1 hour. The reference is listed here: http://www.Ncbi.Nlm.Nih.Gov/pubmed/11770694. ...Read more

Dr. John Chiu
522 doctors shared insights

Zyrtec (Definition)

Zyrtec is a non-sedating antihistamine which is a kind of antihistamine type drug (common ...Read more