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  4. Our team of expert prescribers will assess whether medication is suitable.
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About Product

What Is Piriton?

Piriton is a medication used to relieve the symptoms of an allergic reaction including those stemming from hay fever, 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 it comes in 4mg tablets.

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 treat the itch associated with chicken pox.

You can buy Piriton 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.

How Does Piriton Work?

Piriton prevents histamine – produced in response to a foreign body – from creating an allergic reaction as it blocks the histamine receptors.

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. Due to its effects, you should avoid driving vehicles or operating machinery after taking it.

How Do I Take Piriton?

For adults and children over 12, one tablet should be taken every 4 to 6 hours. No more than 6 tablets should be taken in 24 hours. The elderly should take no more than 3 tablets in 24 hours.

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 hay fever, 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 hay fever 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, you should consult the leaflet supplied with the medicine. If you are unsure about anything displayed in the leaflet, speak to a pharmacist.

Side effects and cautions

Before you take any medication, whether you bought it online or over-the-counter, it's important to read the patient information leaflet supplied with it.

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

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 it 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 combine it with prescription painkillers including co-dydramol and co-codamol.

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 this medication can be found within 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.

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.

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.

Do not take Piriton 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 medicine 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

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 a double dose.

How long does does Piriton take to work?

Piriton usually starts 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.

What should I do if I take too much Piriton?

If you have taken more than the prescribed dose of Piriton, phone the NHS 111 or your GP as soon as you can for advice.

Can I drink alcohol while taking Piriton?

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

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.

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 tablets can I take?

You should take 1 tablet every 4 to 6 hours. You must not exceed taking 6 tablets in any 24-hour period.

Where can I Buy Piriton Online?

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

Table of contents

What Is Piriton?

How Does Piriton Work?

How Do I Take Piriton?

Side effects and cautions

Frequently asked questions


GSK, 2016. Piriton: Summary of Product Characteristics.

Treatment information

  • Product Name: Piriton Allergy
  • Manufacturer: GlaxoSmithKline
  • Active Ingredient(s): Chlorphenamine maleate
  • Administration: Oral
  • Presentation: Tablets
  • Available Strength: 4mg
  • Exemption: Pharmacy
  • Dosage: Take one tablet once a day
  • Description: Piriton is a treatment for allergies, such as hay fever.
  • 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.
Click here to view the Piriton - Patient Information Leaflet

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