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Cetirizine 10mg 30 Antihistamine Tablets Rear view of Cetirizine 10mg 30 Antihistamine Tablets

Cetirizine 10mg 30 Antihistamine Tablets

Cetirizine 10mg 30 Antihistamine Tablets Product information

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Please read the patient information leaflet that is provided with the product. If you would like a specific brand, please do contact our customer services team.

Product Information for Cetirizine 10mg 30 Antihistamine Tablets

Buy Cetirizine Hydrochloride Tablets Online in the UK

You can buy Cetirizine antihistamine tablets online from Oxford Online Pharmacy. This medicine doesn’t require a prescription so can be added straight to your basket. Each pack contains 30 tablets, and you can order up to 6 boxes.  

What is Cetirizine? 

Cetirizine is an H1 histamine inhibitor used to treat allergy symptoms, it works by blocking histamine receptors in different parts of the body so histamines can't activate them to cause symptoms like sneezing or runny nose and eyes. 

Cetirizine Hydrochloride 10mg comes in a daily dose tablet form.  

Cetirizine is suitable for use by adults and children over 12 years of age. Cetirizine also comes as a Cetirizine Liquid

What is Cetirizine used for?

Cetirizine tablets are used to treat the associated symptoms of the following types of allergies: 

  • grass and tree pollen (hay fever)
  • house dust mites 
  • foods, such as peanuts, eggs and milk (food allergy) 
  • animals, particularly pets like dogs and cats 

Allergy symptoms

Symptoms of allergies can include: 

  • Headache
  • Flushing 
  • Low blood pressure  
  • Irregular or fast heart rate 
  • Runny nose 
  • Nasal congestion 
  • Shortness of breath  
  • Itching 
  • Rash or hives 
  • Diarrhoea 
  • Bloating 
  • Nausea or vomiting 
  • Painful periods  
  • Swelling of your lips, tongue or throat 

If any of these symptoms are severe, for example, the swelling of your airways causing difficulty breathing or a sudden feeling of confusion, call 999 straight away. 

If you are still unsure whether you are suffering from an allergy, you can purchase an at-home allergy test kit online. It is a skin prick test which will generate results in only 10 minutes.  

How long does Cetirizine take to work?

Cetirizine effects can begin anywhere from 20 – 60 minutes. By one hour it will reach peak effectiveness and last up to 24 hours.  

Long term use with Cetirizine

We recommend that you take antihistamines for only as long as you need to, normally those suffering from seasonal allergies, such as hay fever due to pollen counts, will only take them during hay fever season. It is also a good idea to start taking antihistamines 2-4 weeks before you expect your hay fever symptoms to start, this is for best protection. 

Even though it's unlikely that these allergy tablets will do you any harm, we advise you to talk to your doctor if you need to take them long-term (every day for a year or more). 

Who shouldn’t use Cetirizine?

Do not take Cetirizine hydrochloride tablets if: 

  • if you are allergic to any of the ingredients of this medicine 
  • If you are pregnant or breastfeeding 
  • If you are allergic to lactose 
  • if you have an end-stage kidney disease 
  • If you are under the age of 12 

Before taking this medicine, you should inform your doctor if you have any of the following medical condition: 

  • If you are a patient with renal insufficiency 
  • If you are an epileptic patient or a patient at risk of convulsions 
  • If you are scheduled for allergy testing this medicine may affect your allergy test results 
  • If you have problems passing urine  

Cetirizine 10mg 30 Antihistamine Tablets reviews

How to use Cetirizine 10mg 30 Antihistamine Tablets

Cetirizine dosage

The recommended dose is to take one tablet once a day, you can take this medicine any time of day but for best results, take it around the same time each day. 

Cetirizine 10mg tabs are for oral use only and should be taken with water.  The tablets should not be chewed. 

The Cetirizine max dosage is 1 tablet per day. If you forget a dose, take the next dose when needed provided you only take a maximum of one capsule in 24 hours. Do not double dose

Side effects of Cetirizine 10mg 30 Antihistamine Tablets

Common side effects (may affect up to 1 in 10 patients)  

  • Sleepiness
  • Fatigue
  • Pharyngitis, cold-like symptoms in the nose (children only)
  • Dizziness, headache  
  • Diarrhoea, nausea, dry mouth  

Uncommon side effects (may affect up to 1 in 100 patients)  

  • Itchy skin, rash
  • Extreme fatigue, feeling generally unwell
  • Feeling agitated  
  • Abnormal feelings of the skin
  • Abdominal pain  

Rare side effects (may affect up to 1 in 1000 patients)  

  • Depression, hallucination (hearing or seeing things), aggression, confusion, sleeplessness  
  • Convulsions  
  • Generalised swelling due to water retention
  • Abnormal liver function
  • Hives
  • Heart beating too fast
  • Weight gain

Very rare side effects (may affect up to 1 in 10,000 patients)  

  • Blurred vision, difficulty focusing, eyes having uncontrolled circular movements
  • Low levels of blood platelets causing unusual bleeding or bruising  
  • Tics (habit spasm)
  • A serious allergic reaction which causes swelling of the face or throat, drug allergy
  • Fainting, involuntary movements, abnormal prolonged muscular contractions, tremor, altered taste
  • Bedwetting, pain and/or difficulty passing water
Frequently Asked Questions
Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Cetirizine 10mg 30 Antihistamine Tablets - Patient Information Leaflet

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Authored on February 27, 2024

Reviewed on February 27, 2024

Kiran Jones

Kiran Jones - MPharm, MRPharmS

Pharmacist / Medical Content Writer

GPhC Number: 2071585