• Cetirizine


From £1.28

Medication features

  • Non-sedating antihistamine tablet
  • Contains Cetirizine Hydrochloride
  • Used to treat hayfever
  • Once daily dosage


Buy Cetirizine Online

You can buy Cetirizine antihistamine tablets online, from our UK registered online pharmacy. After reading any relevant medication information, you can place your order. Our pharmacy team will then review, dispense and dispatch your medication to your chosen address.

About Cetirizine

Cetirizine is an antihistamine tablet which is commonly used to ease symptoms associated with hayfever and other allergies.

It works by interfering with the body's inflammatory response pathway to lessen symptoms such as itchiness and redness.

Using Cetirizine

Cetirizine is usually taken ONCE daily. If you are a hayfever sufferer, you may find taking the tablet throughout the hayfever season effective in keeping symptoms at bay.

Cetirizine is not associated with causing drowsiness, so is often preferred for regular use over older antihistamines such as Phenergan.


Cetirizine is a widely used and effective antihistamine however every patient can respond differently to medication. If you find Cetirizine is not effective for you, you may want to try Loratadine or another antihistamine.


Other treatments for allergy and hayfever are available at Simple Online pharmacy. These include;

  • Loratadine - a similar non-drowsy antihistamine.
  • Zirtek - The branded version of Cetirizine
  • Avamys - a prescription only nasal spray
  • Beconase - a steroid nasal spray
  • Optilast - eye drops used to relieve allergy symptoms present in your eyes. e.g itchy, watery eyes.

Loratadine vs Cetirizine

Both cetirizine and loratadine are non-sedating antihistamines which work to block histamine receptors in the body. This helps prevents the activation of the body's inflammatory response, and thus reduces symptoms associated with allergies.

Both medications are taken as once daily dosages, and both come in 10mg tablets! 

In most respects, Cetirizine and Loratadine are similar, however, some people may find they respond better to one over another.

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How many Cetirizine can you take?

You can take ONE 10mg tablet of Cetirizine per day

What is Cetirizine?

Cetirizine is a medication called an antihistamine which is used to treat symptoms associated with allergies.

What is the difference between Cetirizine and Loratadine?

There is very little difference between these medicines. Both are non-drowsy antihistamines, they both come as a 10mg tablet, and both are once daily dosages.

How does Cetirizine work?

Cetirizine works by reducing the body's inflammatory response, which helps reduce symptoms such as itching and redness.

Side Effects

Side Effects of Cetirizine

As with any medication, it's possible you will experience side effects when taking Cetirizine.

The most commonly occuring side effects to be aware of are

  • Dry mouth,
  • Nausea
  • Headache
  • Fatigue

For a full list of side effects, read the patient information leaflet that comes with the medication, or click in to the patient information leaflet tab!

Info Leaflet

You should always read a medicines information leaflet before use. Follow the link below to read more about Cetirizine.


Cetirizine Hydrochloride Dosage These guidelines apply unless your doctor has given you different instructions on how to use Cetirizine 10 mg Tablets. Please follow these instructions, otherwise Cetirizine 10 mg Tablets may not be fully effective.

Tablets need to be swallowed with a glass of liquid.

Adults and adolescents above 12 years old: 10 mg once daily as one tablet.

Children between 6 and 12 years old: 5 mg twice daily as half a tablet.

Patients with moderate renal impairment are recommended to take 5 mg once daily as a half tablet.


Do not take Cetirizine 10 mg Tablets if you have a severe kidney disease (severe renal failure with creatinine clearance below 10 ml/min). if you are known to be allergic (hypersensitive) to the active substance of Cetirizine 10 mg Tablets or any of the other ingredients of these tablets. if you are known to be allergic (hypersensitive) to hydroxyzine (closely related active substances of other medicines). if you are known to be allergic (hypersensitive) to drugs from the piperazine family, for example buclizine, cyclizine, meclozine, levocetirizine. You should not take Cetirizine 10 mg Tablets if you have an intolerance to some sugars, unless your doctor tells you to (this medicine contains lactose).

Take special care with Cetirizine 10 mg Tablets if you have kidney problems, please ask your doctor for advice; if necessary, you may have to take a lower dose. The new dose will be determined by your doctor. If you are an epileptic patient or a patient at risk of convulsions, you should ask your doctor for advice. Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription. Due to the profile of cetirizine, no interactions with other drugs are expected. Food does not noticeably affect the absorption of cetirizine. No interactions having a noticeable impact have been observed between alcohol (at the blood level of 0.5 per millilitre corresponding to one glass of wine) and cetirizine used at the normal doses. However, as it is the case with all antihistamines, it is recommended to avoid consumption of alcohol while taking this medicine. As with other drugs, use of Cetirizine 10 mg Tablets should be avoided by pregnant women. Accidental use of the drug by a pregnant woman should not produce any harmful effects on the foetus. Nevertheless, the administration of the medicine should be discontinued. You should not take Cetirizine 10 mg Tablets during breast-feeding because cetirizine passes into breast milk. Clinical studies have produced no evidence of impaired attention, alertness and driving capabilities after taking Cetirizine 10 mg Tablets at the recommended dose. If you intend to drive, operate machinery, or perform other tasks that need your full attention, you should not exceed the recommended dose and you should closely observe your response to the drug. If you are a sensitive patient, you may find that the simultaneous use of alcohol or other nervous depressant agents may additionally affect your attention and ability to react. Cetirizine 10 mg Tablets contain lactose; if you have been told by your doctor that you have an intolerance to some sugars, please contact your doctor before taking this medicinal product. If you feel that the effect of Cetirizine 10 mg Tablets is too weak or too strong, please consult your doctor. If you think you have taken an overdose of Cetirizine 10 mg Tablets, please inform your doctor. Your doctor will then decide what measures, if any, should be taken. After an overdose, the side effects described below may occur with increased intensity.

Adverse effects such as confusion, diarrhoea, dizziness, tiredness, headache, ailing, dilating (widening) of the pupil, itching, restlessness, sedation, somnolence, stupor, abnormal rapid heart rate, tremors and urinary retention have been reported. If you forget to take a tablet, take it as soon as you remember, but wait at least 24 hours before taking the next tablet. Do not take a double dose to make up for a forgotten dose.

POSSIBLE SIDE EFFECTS Like all medicines, Cetirizine 10 mg Tablets can cause side effects, although not everybody gets them. The following side effects have been reported in post marketing experience. The frequencies are defined as such: (common: 1 patient out of 100 to 1 out of 10, uncommon: Blood and lymphatic disorder: very rare: thrombocytopenia (low levels of blood platelets) Body as a whole: common: fatigue and Cardiac disorders: rare: tachycardia (heart beating fast), Eye disorders: very rare: accommodation disorder (impaired ability of the eye to focus), blurred vision, oculogyration (eyes moving in an uncontrolled circular manner) Gastro-intestinal disorders: common: dry mouth, nausea (feeling sick), diarrhoea uncommon: abdominal pain, General disorders and administration site conditions: uncommon: asthenia (feeling of weakness), malaise (feeling of being generally unwell) rare: oedema (swelling) - Immune system disorders: rare: allergic reactions, some severe (very rare) - Hepatobiliary disorders: rare: liver function abnormal - Investigations: rare: weight increased - Nervous system disorders: common: dizziness, headache uncommon: paraesthesia (abnormal feelings of the skin) rare: convulsions, movements disorders very rare: syncope (fainting), tremor, dysgeusia (altered taste) - Psychiatric disorders: common: somnolence (sleepiness) uncommon: agitation rare: aggression, confusion, depression, hallucination, insomnia (difficulty in sleeping) very rare: tic (sudden abnormal repetitive muscle movement) - Renal and urinary disorders: very rare: abnormal elimination of urine - Respiratory system disorders: common: pharyngitis (sore throat), rhinitis (swelling and irritation inside the nose) - Skin and subcutaneous tissue disorders: uncommon: pruritus (itching), rash rare: urticaria (swelling, redness and itchiness of the skin) very rare: oedema (swelling), fixed drug eruption If you develop one of the side effects described above, please inform your doctor.

At the first signs of an allergic (hypersensitivity) reaction, stop taking Cetirizine 10 mg Tablets and contact your doctor immediately. Symptoms of an allergic (hypersensitivity) reaction include difficulty breathing, swelling of the face, neck, tongue or throat. Your doctor will then assess the severity and decide on any further measures that may be necessary. If you think you have any side effects not mentioned in this leaflet, please inform your doctor or pharmacist. Keep out of the reach and sight of children. Do not use Cetirizine 10 mg Tablets after the expiry date which is stated on the box and blister.


The active substance of Cetirizine 10 mg Tablets is cetirizine hydrochloride.

One filmcoated tablet contains 10 mg cetirizine hydrochloride.

Other ingredients are: pregelatinized starch, lactose, maize starch, povidone, magnesium stearate, macrogol 6000, basic polymethacrylate, titanium dioxide (E171), talc.

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