Zirtek Allergy Relief Tablets - 21 Tablets

In stock
Alexandra Moses - Medical Content Writer
Alexandra Moses
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
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Buy Zirtek Allergy Tablets

Zirtek Allergy Tablets contain the active ingredient cetirizine dihydrochloride, a non-drowsy antihistamine that’s used to relieve nasal and eye symptoms caused by seasonal allergies (hay fever) or perennial allergies, such as dust and pet dander.


How cetirizine dihydrochloride works

Cetirizine dihydrochloride is a non-drowsy medicine known as an antihistamine. When you come into contact with something you’re allergic to, such as pollen, your body produces a substance called histamine.

This causes watery eyes and itchy skin to name just a few symptoms. Cetirizine dihydrochloride works by blocking the effects of histamine to reduce any unpleasant symptoms.



Always take Zirtek Allergy Tablets exactly as described in the patient information leaflet or as your doctor / Chemist4U pharmacist has told you. The tablets need to be swallowed with a glass of water. For adults and children aged 12 years and over, take 10 mg once daily, which is 1 tablet.

For children between the ages of 6 and 12, the recommended dose is 5 mg twice daily as half a tablet two times per day. Do not exceed the recommended daily amount.


Side effects

Like all medicines, Zirtek Allergy Tablets may cause side effects in some people, but these won’t affect everybody. Common side effects include: 


  • Sleepiness and fatigue
  • Dizziness
  • Headache
  • Diarrhoea
  • Nausea
  • Dry mouth
  • Pharyngitis, rhinitis (in children)


For more information on potential side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.


Serious side effects

Seek emergency medical attention if you notice any signs of a severe allergic reaction, symptoms of which include swelling of the face and throat, skin rash, breathing difficulties and/or loss of consciousness. 



Zirtek Allergy Tablets may be unsuitable for certain people. Do not take these tablets if you are allergic to cetirizine dihydrochloride, hydroxyzine or to piperazine derivatives (closely related active ingredients of other medicines) or any of the other listed ingredients.

Do not take these tablets if you have a severe kidney disease (severe renal failure with creatinine clearance below 10 ml/min).

Talk to your doctor or Chemist4U pharmacist before taking this medicine if you have any of the following: 


  • If you have renal insufficiency
  • If you have problems passing urine (like spinal cord problems or prostate or bladder problems)
  • If you are an epileptic patient or a patient at risk of convulsions


Using/taking other medicines

You must always tell your doctor or Chemist4U pharmacist if you are taking/using or thinking about taking/using any other medicines before taking Zirtek Allergy Tablets.


Age restrictions 

Zirtek Allergy Tablets are not suitable for children under the age of 6. If you’re looking for an allergy treatment for a child under the age of 6, you should speak to your GP or Chemist4U pharmacist for advice on alternative treatment options.


Pregnancy and breastfeeding

Zirtek Allergy Tablets should be avoided by pregnant and breastfeeding women. If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, you must ask your doctor or Chemist4U pharmacist for advice before taking any new medicine. 



No clinically significant interactions have been observed between alcohol (around one glass of wine) and cetirizine dihydrochloride used at the recommended doses. 

However, there is no data available on the safety when higher doses of cetirizine dihydrochloride and alcohol are taken together. Therefore, it’s recommended to avoid taking Zirtek Allergy Tablets with alcohol. 


Driving and operating machinery 

Zirtek Allergy Tablets can make some people feel drowsy and dizzy. You should not drive or operate machinery until you know how this medicine affects you.


Storage information

Store in a cool, dry place out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging. Do not throw away any medicines via wastewater or household waste.


Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to https://www.nhs.uk

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or Chemist4U pharmacist before taking this product. If you suffer from any allergies, ask your doctor or Chemist4U pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.


Active Ingredients

  • Cetirizine
Brand Information
Brand Name

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Shipping Times

MethodHandling TimeTransit TimeTimescaleApprox Cost
Standard Shipping (3-5 Working Days)123£2.95
Royal Mail Tracked 24011£4.95

Times are given in working days and are approximate. Costs may change based on order total, day of the week or location within the UK. Ability to hit timescales will depend on whether the products are ordered before a cut off time, as well as additional administration time incurred in reviewing your order.

Please review the estimates at the checkout.

Shipping Costs

Free UK Delivery on all orders over £30* - Delivery within 3-5 working days.

Standard UK Delivery - £2.95* - Delivery within 3-5 working days.

Express UK Delivery - £4.95** - Delivery within 1-2 working days.

Temperature Controlled Delivery - £8.85 - Delivery within 1-3 working days.

Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.

*Excluding refrigerated products and treatments which are subject to different postage charges.


Discreet Delivery

All our items are sent completely discreet for your peace of mind.

This means the packaging is plain, there is no mention of what product is inside your package and there is no mention of Chemist4U either.

We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

Returns Information

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