Zyrtec
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Reviewed on August 23, 2024. by
Dr. Joseph Palumbo
Senior Medical Adviser
Registered with NPI (No. 1043478878)
Next review due on
August 23, 2027.
Dr. Joseph Palumbo

Last updated on Aug 23, 2024.

Product info

  • Zirtek is a non-drowsy antihistamine that relieves symptoms of hay fever.

  • It blocks histamine, a chemical released during allergic reactions.

  • It starts working within an hour.

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10mg
$144.95
  • Prices include:
    Express shipping

    2-5 day shipping by secure courier

  • Consultation + Access to our clinicians

    Ask our experts anything you like, any time you want.

  • Total
    $144.95
    Save $0.00 each order
Zyrtec Cetirizine

What is Zyrtec?

Zyrtec is a branded medicine that uses the active ingredient, cetirizine. Cetirizine is a second generation (non-drowsy) antihistamine that helps with the symptoms of a range of allergic conditions, such as hay fever, pet allergies, eczema and hives.[1]

It comes as a tablet, which you can either take to help you with your symptoms when you’ve been exposed to a trigger (such as pet hair or an insect bite) or daily to prevent symptoms from occurring (like in some summer or spring months when the pollen count is high).

How does Zyrtec work?

Allergic reactions are when your body incorrectly perceives a substance to be a threat, and as a result produces a chemical called ‘histamine’, which can cause a runny nose, itching, sneezing and rashes.

Antihistamines like Zyrtec work by stopping the chemical, histamine, from being produced and causing these allergy symptoms. So, if you’re taking Zyrtec to help with conditions like eczema or hives it won’t actively treat it, but rather lessen your itchy and uncomfortable symptoms – which can stop you from scratching your skin.

What doses of Zyrtec are there?

Zyrtec is only available in one dose, so if it’s not working as you’d hoped to treat your symptoms you should talk to our clinician. They might recommend another treatment.

Treated trusted source:

  1. Curran, M.P., Scott, L.J. and Perry, C.M. (2004). Cetirizine. Drugs, 64(5), pp.523–561.
treated.com This page was written by The Treated Content Team.
Dr. Joseph Palumbo
This page was medically reviewed by Dr. Joseph Palumbo on August 23, 2024. Next review due on August 23, 2027.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Zyrtec Cetirizine

How to take Zyrtec

You should always take Zyrtec as you’ve been instructed by our physician.

To use Zyrtec:

  • don’t take more than one tablet per day unless you’ve been told otherwise
  • swallow the tablet whole with water
  • children between 6-12 should have half a tablet a day unless told otherwise

How long does it take Zyrtec to work?

You should start to feel better within an hour.[1] If you aren’t feeling relief from your symptoms, don’t take more. Speak to our clinician for advice.

What should I do if I make a mistake when taking Zyrtec?

If you’ve accidentally taken too much Zyrtec you should contact a clinician. They’ll tell you what to do based on how much you’ve taken and how you’re feeling.

If you forget a dose of Zyrtec then you can take it as soon as you remember. Just make sure that you leave 24 hours between doses, and don’t double up on doses to make up for missed ones.

Treated trusted source:

  1. nhs.uk. (2018). Cetirizine: antihistamine that relieves allergy symptoms.
treated.com This page was written by The Treated Content Team.
Dr. Joseph Palumbo
This page was medically reviewed by Dr. Joseph Palumbo on August 23, 2024. Next review due on August 23, 2027.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Zyrtec Cetirizine

Zyrtec isn’t suitable for everyone, and there are some things that you need to be aware of when taking it.

Here’s all the official info on it. If anything is unclear, let our clinician know, and they can talk with you about it.

Zyrtec Cetirizine

Zyrtec: FAQ

Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.

Is Zyrtec similar to any other treatments?

Answer:
There are quite a few different meds that have the same active ingredient as Zyrtec (Cetirizine). This means that they’ll all work in the same way to treat your symptoms, but will be branded differently and will have been produced in different labs.

You can also get Cetirizine as a generic medication. This means that it can be produced in a number of different labs, but because it doesn’t have the branding, it’s usually a bit cheaper than its branded equivalents.

How is Zyrtec different from other antihistamines?

Answer:
Zyrtec is what’s known as a non-drowsy antihistamine. This means that it’s a lot less likely to make you feel drowsy than some other antihistamines, like diphenhydramine (the active ingredient in Benadryl). Some antihistamines use other active ingredients as well, so even though they all work largely in the same way to help with your symptoms, they’ll have a slightly different effect on your body, and might give you different side effects.

If you’re not sure which type of antihistamine could be best for you, talk to our doctor. They’ll be able to help you choose the best treatment for you based on your health needs and preferences.

Do I need a prescription for Zyrtec?

Answer:
No, you don’t need a prescription for Zyrtec. In fact, it can be bought over the counter from many stores, supermarkets and pharmacies.

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