Patient leaflet - Piriteze Allergy tablets
1. What Piriteze Allergy Tablets do
Piriteze Allergy Tablets are used to treat the allergic symptoms of hayfever (itchy or watery eyes, sneezing and a runny nose) and other allergies e.g. pet, house dust mite and mould spore allergies. They can also be used to relieve the rashes and itching of urticaria (hives).
The active ingredients is cetirizine hydrochloride, an antihistamine which can help to relieve the symptoms of some allergies and itchy skin rashes.
2. Check before you take Piriteze Allergy Tablets
Do not take Piriteze Allergy Tablets:
If you have ever had an allergic reaction to antihistamines or to any of the other ingredients
(listed in Section 6)
If you have severe kidney problems
Take special care with Piriteze Allergy Tablets
- If you have an intolerance to some sugars.
Be careful when drinking alcohol while using Piriteze Allergy Tablets. They can increase the effects of drinking.
Do not drive or operate machinery if the tablets make you feel drowsy. At the recommended dose, Piriteze Allergy Tablets do not cause drowsiness in the majority of people.
- Talk to your doctor or pharmacist before taking these tablets if you have kidney problems as
you may need to take a lower dose. 
- If you are epileptic or at risk of convulsions (fits).
- If you are having an allergy skin test you need to wait 3 days after taking Piriteze Allergy Tablets.
If you have an enlarged prostate. It may increase the risk of having difficulty passing water.
Pregnancy and breast-feeding
If you are pregnant or breast-feeding, talk to your doctor before taking these tablets.
3. How to take Piriteze Allergy Tablets
Take with a glass of liquid.
Adults and children aged 12 years and over:
Swallow one tablet once a day.
Children aged 6 to 12 years:
Swallow half a tablet twice a day.
Children under 6 years: Not recommended.
If you have kidney problems you should talk to your doctor or pharmacist for advice before taking these tablets as a lower dose may be required.
* Do not take more than the recommended dose.
* Do not give to children under 6 years.
If you take too many tablets
Contact your doctor or casualty department. Do not drive if you have taken too many tablets.
If you forget to take the tablets
Take one as soon as you remember, unless it is nearly time to take the next one. Never take two doses together.
If you stop taking the tablets:
- Rarely, pruritis (intense itching) and/or urticaria may occur. If your symptoms persist, see your doctor.
- Seek medical advice if withdrawal symptoms are experienced.
If you have any further questions on the use of this medicine, ask your doctors or pharmacist.
4. Possible side effects
Like all medicines, Piriteze Allergy Tablets can have side effects, but not everybody gets them.
Stop taking the medicine and seek immediate medical help if you experience: 
- Sudden signs of an allergic reaction such as developing a rash, swelling of the mouth or face or difficulty breathing
- Bruising or bleeding more easily than normal
- Convulsions or fits
- Loss of consciousness
Stop taking the medicine and tell your doctor if you experience:
Convulsion, hallucinations, rapid heart beat, abnormal liver function tests.
The following side effects may occur:
Common:
Headache or dizziness, drowsiness or tiredness, restlessness, dry mouth, sore throat, abdominal pain, diarrhoea, nausea [feeling sick], runny nose.
Uncommon:
Agitation, weakness, malaise, pins and needles, itching, rash or hives.
Rare:
Aggression, depression, weight gain, swelling, insomnia, movement disorders including tremor, muscle spasm and tics.
Very Rare:
Taste disorder, blurred vision, eye movement disorder, difficult or painful or voluntary urination.
At a very low frequency that cannot be esimated:
Increased apetite, nightmares, inflammation of the liver, skin eruptions, joint pain, memory loss, difficulty passing water or a feeling of dizziness. In very rare cases people have had suicidal thoughts when taking this medicine. If you experience these, stop taking the medicine and see your doctor.
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide mor einformation on the safety of this medicine.
5. How to store Piriteze Allergy Tablets
Keep out of the sight and reach of children.
Do not use this medicine after the ‘EXP’ date shown on the pack.
6. Further information
Active ingredient Each tablet contains Cetirizine Hydrochloride 10 mg.
Other ingredients Microcrystalline cellulose, lactose monohydrate, colloidal anhydrous silica, magnesium stearate, Hypromellose (E 464), macrogol 4000, titanium dioxide (E 171) and polydextrose.
Packs of Piriteze Allergy Tablets contain 4, 7, 12, 14 or 30 tablets. Not all pack sizes may be marketed.
The marketing authorisation holder is Haleon UK Trading Limited, Weybridge, KT13 0NY, U.K. and all enquiries should be sent to this address.
The manufacturer is Haleon Alcala, S.A., Ctra. De Ajalvir km. 2,500 – 28806 Alcala de Henares, Madrid – Spain.
This leaflet was last revised in August 2026.
Trade Marks are owned by or licensed to the Haleon group of companies.