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Piriton Allergy Tablets

In Stock
2mg/5ml Syrup
Chlorphenamine 4mg
Package Type
60 Tablets
56 tablets
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Treatment Information

Table of contents

Buy Piriton Allergy Tablets & Syrup Online

Piriton allergy tablets relieve the symptoms of allergies, including those stemming from hayfever, pet allergies, and dust mite allergies. It can relieve allergic symptoms such as itchy eyes, running nose, sneezing, and rashes.

The active ingredient in Piriton is chlorphenamine, and is available as 4 mg tablets or a mint flavoured syrup which contains 2 mg of chlorphenamine per 5 ml.

You can buy Piriton allergy tablets and syrup online from Prescription Doctor's trusted UK pharmacy. Our pharmacy can dispatch your treatment the same day via a fast next-day delivery. All orders are packaged in discreet packaging to ensure your confidentiality.

What is hayfever?

Hayfever is an allergy to small particles called pollen. Plants including flowers, tress and grass produce pollen, which is often carried on the wind.

When pollen enters the body, the immune system overreacts and releases a chemical called histamine in an attempt to remove it from the body. This histamine causes the symptoms synonymous with hayfever, such as itching, sneezing and watery eyes.

While hayfever usually lasts from March through September, different types of pollen are present at different times during these months. Due to this, how long hayfever symptoms last differs amongst the population.

Understanding when your symptoms develop can indicate the type of pollen you are allergic to. For example, tree pollen reaches it's peak during the months of May and June, while weed pollen is highest during July and September.

Your doctor can help you determine the kind of pollen you are allergic to. Knowing when you are most likely to experience hayfever symptoms can be useful in sourcing the right antihistamines to reduce or prevent your symptoms.

How Does Piriton Work?

Piriton blocks histamine receptors to prevent histamine from binding to them and causing allergy symptoms.

It usually works within 30 to 60 minutes of being taken. If you plan on going out somewhere, you should consider taking Piriton between 30 minutes to an hour before you are due to set out.

Piriton contains chlorphenamine maleate which is a sedating antihistamine. Therefore, it can make you feel drowsy after it is taken.

Piriton can also be used to combat the effects of more serious reactions including angioneurotic oedema (swelling of the tongue, throat, lips, and eyes), as well as being used to subdue the itch of chicken pox.

Due to its drowsy effects, you should avoid driving vehicles or operating machinery after taking it until you feel it is safe to do so.

How long does Piriton take to work?

Piriton allergy tablets and syrup usually start working within 30 minutes of taking it. If you need to go out somewhere, you should take it 30 minutes before you plan on heading out.

How Do I Take Piriton Allergy Tablets & Syrup?

Always take Piriton as instructed by a healthcare professional, such as a doctor or pharmacist.

If you are unsure how to take Piriton tablets or Piriton syrup, ask your doctor or speak to a pharmacist.

Piriton Tablets

For adults and children over 12, take one Piriton allergy tablets every 4 to 6 hours.

Piriton tablets should be swallowed whole with a glass of water.

No more than 6 tablets should be taken in 24 hours.

The elderly should take no more than 3 tablets in 24 hours.

Piriton Syrup

You should take 2 5ml spoonfuls of Piriton syrup every 4 to 6 hours. Do not take more than 12 5ml spoonfuls of Piriton in any 24-hour period.

When taking Piriton syrup, you should use an appropriate measuring spoon. You can buy a medicine spoon from your local pharmacy.

Do not use a normal kitchen spoon as this can cause you to take the wrong amount of Piriton syrup.

Piriton can be taken to relieve the symptoms of an allergic reaction to pollen, pets, dusts and other allergens. It can also be taken in anticipation of suffering from an allergic reaction.

If you have hayfever, you can take Piriton before leaving the house. Check the pollen count in the morning before you go out and avoid places where the pollen count will be high, such as public parks. Understanding how to manage your hayfever symptoms aside from taking Piriton can help you reduce your risk of symptoms.

For more information on what Piriton can be used for, as well as how to take it under different circumstances, we recommend you to read the leaflet supplied with the medicine.

If you are unsure about how to take Piriton allergy tablets or syrup, you should consult the patient information leaflet supplied with the medicine. If you are unsure about anything in the patient information leaflet, speak to a pharmacist.

What should I do if I forget to take Piriton when I should?

If you forget to take a dose of Piriton, take it as soon as you remember if you need to. Your next dose will need to be at least four hours after your missed dose.

Never take more Piriton to make up for the dose you missed.

What should I do if I take too much Piriton?

If you have taken more than the prescribed dose of Piriton, phone NHS 111 or go straight to your nearest accident and emergency department. Remember to take the packaging and any remaining Piriton tablets or syrup with you so that doctors treating you know what you have taken.

Taking too much Piriton can cause drowsiness.

Do not attempt to drive or cycle to hospital - ask someone to drive you there or get an ambulance.

Piriton side effects and cautions

Before you take Piriton allergy tablets or syrup, it's important to read the patient information leaflet supplied with it.

The patient information leaflet contains instructions on how to store, take and dispose Piriton, as well as important information regarding the safety of Piriton.

Read the patient information leaflet for Piriton tablets (PDF) online.

Read the patient information leaflet for Piriton syrup (PDF) online.

Who Should Not Take Piriton?

Piriton is suitable for most people, although there are some groups of people who should avoid it. These include:

  • Any patient who is taking a monoamine oxidase inhibitor antidepressant within the last 14 days
  • Anyone who is allergic to the ingredients of Piriton
  • Anyone with a lactose intolerance

If you have trouble swallowing tablets, Piriton syrup may be more suitable.

Who Should Get Medical Advice Before Using Piriton?

For some, Piriton can be taken only after obtaining medical advice. The people who should be asking for this advice include:

  • Anyone suffering from asthma or bronchitis, or anyone who has bronchiectasis (widening of the airways)
  • Those with glaucoma or raised eye pressures
  • Those with epilepsy
  • Anyone with liver disease or heart disease
  • Those suffering from high blood pressure
  • Anyone with an overactive thyroid gland
  • Men with an enlarged prostate gland
  • Women who are pregnant or breastfeeding

Piriton And Other Medications

If you are currently taking medication – including herbal medications – you should check with your doctor or pharmacist before taking Piriton.

Piriton should not be used in combination with any other type of antihistamine.

You can use Piriton with other allergy medications that do not include antihistamines. You can also use Piriton with paracetamol or ibuprofen (over-the-counter painkillers).

You should not take Piriton alongside prescription painkillers.

If you are not sure whether Piriton is safe to take alongside another medicine you are taking, speak to your doctor for advice.

Side effects of Piriton

All medicines carry the risk of side effects, though not everybody gets them. It's important to understand the risks associated with the medicine you are taking and to remain vigilant of any side effects you may experience.

Side effects may include:

  • Chest tightness or thickening of phlegm
  • Children may become excited
  • Confusion, excitability, irritability, low mood or nightmares
  • Difficulty concentrating, feeling tired, dizziness
  • Drowsiness
  • Loss of appetite, indigestion, feeling or being sick, or dry mouth
  • Low blood pressure or changes in heart rhythm
  • Ringing in the ears
  • Skin peeling, itchy rash and sensitivity to the sun
  • Twitching, muscular weakness and abnormal co-ordination

This is not an exhaustive list of side effects. Further information regarding the safety of Piriton allergy tablets can be found inside the patient information leaflet.

If you experience any side effects, whether they are listed above or in the patient information leaflet, inform your doctor or a pharmacist as soon as possible for advice.


Do not take Piriton if you are allergic to chlorphenamine or any of its other ingredients listed in the patient information leaflet.

If you experience an allergic reaction after taking Piriton, stop taking it. Seek immediate medical attention by going straight to your nearest accident and emergency department. Remember to take the packaging and any remaining medicine with you, so that doctors treating you know exactly what you have taken.

Signs of an allergic reaction:

  • Chest tightening
  • Dry, red and cracked skin
  • Itchy, red watery eyes
  • Raised, itchy, red rash (hives)
  • Swelling of the lips, tongue, eyes or face
  • Tummy pain, nausea, vomiting or diarrhoea
  • Wheezing

Pregnancy and breastfeeding

If you are pregnant, think you might be pregnant, plan on starting a family or breastfeeding, you should speak to your doctor before taking Piriton allergy tablets or syrup.

Other safety information

Always seek your doctor's advice before buying Piriton online from Prescription Doctor.

Please inform our doctor of all medications you are currently taking, whether they were bought over-the-counter or prescribed by your doctor, including health supplements.

Piriton syrup contains 6.3% v/v alcohol per 5 ml, and should therefore be considered carefully in certain groups of people, including those with alcoholism, children, pregnant or breastfeeding women, people with liver disease or epilepsy.

Do not take Piriton tablets or syrup past the expiry date printed on the packaging. The date refers to the last day of the indicated month.

Never throw away medicine via household or water waste. Take any unwanted or expired medication to your local pharmacy and ask them to dispose of it safely on your behalf.

Always store Piriton tablets and syrup out of sight and reach from children and pets.

Never share your medicine with anybody else, even if they are experiencing the same symptoms as you.

Frequently asked questions about Piriton

Can I drink alcohol while taking Piriton tablets or syrup?

Since Piriton contains a sedating antihistamine (chlorphenamine), it is not advisable to drink alcohol while taking it, as this can make the drowsiness worse.

Piriton syrup contains 6.3% v/v alcohol per 5ml of syrup.

Will Piriton impact my ability to drive or operate machinery?

Piriton has a sedative effect and may cause you to feel drowsy after taking it.

As with any sedative, you should not drive or operate machinery when taking Piriton until you feel it is safe to so.

If your work involves driving or operating machinery and power tools, speak to your doctor about non-drowsy antihistamines.

How long does drowsiness last after taking Piriton (chlorphenamine)?

According to the NHS, drowsiness usually wears off after 4 to 6 hours after taking Piriton.

How long does the sedative effect of Piriton last?

The feeling of lethargy, after taking Piriton, usually wears off within 6 hours. During this time, you should refrain from driving or operating machinery.

How many Piriton allergy tablets can I take?

You should take 1 Piriton allergy tablet every 4 to 6 hours. You must not take more than 6 tablets in any 24-hour period.

What's the difference between Piriton and Piriteze?

While they sound similar, Piriton and Piriteze contain different active ingredients.

Piriton contains chlorphenamine maleate while Piriteze contains cetirizine hydrochloride.

Another key difference is that Piriton is classed as a drowsy or sedating histamine, while Piriteze is classed as a non-drowsy or non-sedating antihistamine.

If you are unsure whether Piriton or Piriteze are suitable for you, speak to your doctor or a pharmacist.

Where can I Buy Piriton Online?

You can buy Piriton for hayfever online from Prescription Doctor's UK based pharmacy. We offer a discreet, next-day delivery service on orders approved before 3pm.

Table of contents

Buy Piriton Allergy Tablets & Syrup Online

How Does Piriton Work?

How Do I Take Piriton?

Piriton side effects and cautions

Frequently asked questions


GSK, 2016. Piriton: Summary of Product Characteristics.

NHS, 2018. Chlorphenamine (including Piriton).

Treatment information

  • Product Name: Piriton Allergy
  • Manufacturer: GlaxoSmithKline
  • Active Ingredient(s): Chlorphenamine maleate
  • Administration: Oral
  • Presentation: Tablets
  • Available Strength: 4mg tablet, 2mg/5ml syrup
  • Exemption: Pharmacy
  • Dosage: Take one tablet once a day
  • Description: Piriton is a treatment for allergies, such as hayfever.
  • Drug Class: Antihistamine
  • Alcohol Consumption: Do not drink alcohol while taking Piriton allergy tablets.
  • When Pregnant: If you are pregnant or think you might be pregnant, speak to your doctor before taking Piriton.
  • When Breastfeeding: If you are breastfeeding, speak to your doctor before taking Piriton.
  • Price: 3.99 GBP
Click here to view the Piriton Allergy Tablets - Patient Information Leaflet

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