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Cetirizine tablets relieve symptoms of hay fever and allergy for up to 24 hours. The active ingredients cetirizine hydrochloride or cetirizine dihydrochloride can also be found in branded medication such as benadryl and piriteze, which are usually more expensive.

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ABOUT Cetirizine

What is Cetirizine?

Cetirizine is an antihistamine which is used to reduce symptoms associated with hay fever and allergies. Antihistamines work by decreasing the production of histamine (a natural substance created by your body in response to an allergic reaction).

What is Cetirizine 10mg used for?

Cetirizine is used to relieve symptoms associated with allergic conditions, such as year-round allergies (including dust or pet allergies), hay fever, itchy skin caused by insect bites or nettle stings (urticaria/hives) and chronic allergic rhinitis (including persistent allergic rhinitis).

How does it work?

Cetirizine is an effective hay fever and allergy treatment that works by blocking histamine, which is made by the body in response to an allergic reaction. Histamine causes symptoms such as sneezing, itchy eyes and can cause your nose to become itchy and blocked. Reducing the amount of histamine relieves these symptoms. 

How to take Cetirizine?

You should take one tablet daily. Cetirizine can be taken with or without food. It is best to take cetirizine with a drink of water, however it can be taken with milk or juice. Tablets should be swallowed whole and should not be chewed.

How long does it last?

The antihistamine effects of one cetirizine typically last for about 24 hours. It starts working one after hour after it is taken.

Cetirizine storage

  • Keep out of the reach and sight of children.
  • Keep away from direct heat and light, in a cool, dry place.
  • Keep in its original packaging to protect against moisture
  • Do not use after the stated expiry date

Will it make me drowsy?

Cetirizine is classed as a non-drowsy antihistamine; however, a small number of people still find it makes them feel sleepy.

What happens if I take more than I should?

Taking more than one tablet a day will not make it more effective. If you take more than the prescribed dose, you may experience symptoms such as: confusion, diarrhoea, difficulty passing urine, dilation of the pupils, dizziness, drowsiness, fast heartbeat, fatigue, feeling unwell, headache, itching, restlessness, shaking and sleepiness. Contact your doctor or pharmacist immediately.

What if I miss a dose?

If you miss a dose of cetirizine, skip this dose and ensure the next tablet is taken on time. Do not take a double dose to make up for the missed dose. In rare cases symptoms of pruritus (intense itching) and/or urticaria may recur.

What happens I stop taking these tablets?

If you stop taking cetirizine, you are unlikely to experience new side effects. However, the symptoms that cetirizine was treating can reappear. They should not be any worse than before you started your treatment. If you have any queries or concerns with this medicine, seek advice from your doctor or pharmacist.

When should I not use Cetirizine?

You should not use cetirizine if:

  • You are allergic to cetirizine hydrochloride, hydroxyzine, any piperazine derivatives or to other antihistamines or any of the other ingredients of this medicine, which can be found here.
  • You have liver or kidney problems
  • You suffer from severe kidney failure
  • You have a rare inherited blood disorder (porphyrias)
  • You suffer from Epilepsy
  • You are scheduled for allergy testing


You may still be able to use cetirizine, but you should check with your doctor or pharmacist beforehand. If you are taking any medication, you should also check with your doctor or pharmacist.

Does Cetirizine react with any other medications?

Medications that react with Cetirizine can include but are not limited to:

Moderate reactions:

  • Betahistine


Severe reactions:

  • Isocarboxazid
  • Phenelzine
  • Tranylcypromine


There is may be other medications that may react with cetirizine. Contact your GP or pharmacist before using this treatment if you are currently taking or have recently taken any other medication.

What is the difference between Levocetirizine and Cetirizine?

Cetirizine and levocetirizine carry out similar jobs and have similar structures.

Can I buy Cetirizine online?

You can buy Cetirizine online. You will need to fill out an online consultation to make sure that it is safe for you to take before your order can be released.

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Side Effects

Are there any side effects associated with Cetirizine?

As with most medication, there are potential side effects. Not everyone will experience side effects, but they are a possibility. If you experience any of the following side effects or any side effects not listed, stop using this medication immediately and seek advice from a healthcare professional (GP or pharmacist).

  • Examples of common side effects (which may affect 1/10 people) include diarrhoea, dizziness, dry mouth and fatigue.
  • Examples of uncommon side effects (which may affect 1/100 people) include abdominal pain and feeling agitated
  • Examples of rare side effects (which may affect 1/1000 people) include aggression, confusion, depression and hallucinations (seeing or hearing things)  
  • Examples of very rare side effects (which may affect 1/10,000 people) include blurred vision and accommodation disorder (difficulty focusing)
  • Examples of other potential side effects may include increased appetite, memory loss and nightmares.

Contact your GP or pharmacist if you experience any of these side effects, or any side effects that have not been listed above.

Product Reviews For Cetirizine

Cetirizine PRICES

*Please note: We do NOT charge a prescription fee

Medicine x30 Tablets (1 Month) x60 Tablets (2 Months) x90 Tablets (3 Months) x180 Tablets (6 Months)
Cetirizine 10mg Tablets (1 Month) 1.45
Cetirizine 10mg Tablets (2 Months) 2.89
Cetirizine 10mg Tablets (3 Months) 4.29
Cetirizine 10mg Tablets (6 Months) 8.49
Cetirizine 10mg (Teva Brand) Tablets (1 Month) 3.45
Cetirizine 10mg (Teva Brand) Tablets (2 Months) 4.89
Cetirizine 10mg (Teva Brand) Tablets (3 Months) 6.29




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