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60 tablets
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Treatment Information

Table of contents

Buy Clarityn Online UK

Clarityn tablets provide all-day relief from hay fever and allergy symptoms. It is available over-the-counter in 10mg tablets.

With Prescription Doctor, you can get Clarityn tablets delivered to your door the next day, if you order before 3pm, our pharmacy can dispatch your item the same day via a discreet next-day delivery.

What is Clarityn used for?

Clarityn is a non-drowsy antihistamine that is used to prevent and relieve the symptoms of hay fever, such as:

  • Runny or itchy nose
  • Watery or itchy eyes
  • Sneezing

It can also be used to treat urticaria, which causes redness and itching of the skin. This is sometimes referred to as hives, wheals, welts or nettle rash.

If you are unsure whether Clarityn would be effective for you, speak to your doctor or ask a pharmacist.

How Do I Take Clarityn?

Clarityn can be taken after being exposed to an allergen, or on a regular basis to prevent symptoms from occurring.

You should take 1 tablet daily to prevent allergy symptoms.

Aim to take the tablet at the same time every day. Setting a reminder on your phone may help you.

Swallow Clarityn tablets whole with a glass of water.

If you have difficulty swallowing the tablet whole, you can split the tablet along the score line to make it easier to swallow.

Do not crush or chew Clarityn tablets.

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

If you forget to take Clarityn when you should, take it as soon as you remember.

If it is nearly time for your next dose, skip the missed dose and take it at the next usual time.

Do not take more Clarityn to make up for the missed dose.

What should I do if I take more Clarityn than I should?

If you accidentally take more Clarityn than you should, speak to your doctor as soon as possible.

Taking more Clarityn than you should is unlikely to relieve your symptoms any faster, but may increase your risk of side effects.

Never take more tablets unless your doctor has told you that it is safe to do so.

Clarityn Side Effects and Cautions

Before you begin taking Clarityn, it's important to read the patient information leaflet provided with your pill pack.

All medicines carry the risk of side effects, though not everybody experiences them. It’s important to remain vigilant of any side effects that may occur.

Common side effects of Clarityn include:

  • drowsiness
  • headaches
  • increased appetite
  • sleeping problems

This is not an exhaustive list of side effects. For a full list of side effects, consult the patient information leaflet enclosed with your treatment.

If you experience any side effects - regardless of whether they are listed above or within the patient information leaflet - inform your doctor.


Do not take Clarityn if you are allergic to loratadine or any of the ingredients listed within the patient information leaflet.

If you experience the signs and symptoms of an allergic reaction after taking Clarityn, stop taking the medicine and seek immediate medical attention.

Clarityn contains lactose. Speak to your doctor before taking clarityn if you have been told that you are sensitive to some sugars.

Pregnancy and breastfeeding

If you are pregnant, think you might be pregnant or are attempting to become pregnant in the near future, speak to your doctor before taking Clarityn.

Do not take Clarityn if you are pregnant.

Do not take Clarityn if you are breastfeeding.

If you become pregnant while taking Clarityn, inform your doctor as soon as possible.

Other safety information

Inform our medical team of all other medicines you are currently taking, including those bought over the counter or prescribed by your doctor.

If you have any questions about Clarityn, feel free to speak to our online prescriber under the "my chats" section under your Prescription Doctor account.

Do not take Clarityn past the expiry date printed on the packaging.

Never throw away medicines via household or water waste, as this can harm the environment. Ask your local pharmacy to dispose of any unwanted or expired medicine on your behalf.

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

Never share your medicine with anybody else, even if they are experiencing the same symptoms or have been diagnosed with the same condition as you.

Frequently Asked Questions

Will Clarityn affect my ability to drive or operate machinery?

While Clarityn is a non-drowsy antihistamine, it may still cause drowsiness in some people. If you experience drowsiness after taking Clarityn, do not drive or operate machinery until you feel safe to do so.

Can I drink alcohol while taking Clarityn?

It is safe to drink alcohol while taking Clarityn. You should avoid drinking more than 14 units of alcohol per week, as recommended by the government.

Will Clarityn affect my contraceptive?

Clarityn should not interfere with contraceptives, including the combined contraceptive pill or the morning after pill (emergency contraception).

How long does Clarityn take to work?

Clarityn usually starts working within an hour of taking it.

Can I take Clarityn with other hay fever treatments?

You can take Clarityn alongside some hay fever treatments such as eye drops and nasal sprays. Check with your doctor first.

Is it safe to take Clarityn every day?

You can take Clarityn every day for as long as your symptoms are present. However, if you feel that Clarityn doesn’t clear your symptoms effectively, or you notice your symptoms to worsen, speak to your doctor.

Treatment information

  • Product Name: Clarityn
  • Manufacturer: Bayer PLC
  • Active Ingredient(s): Loratadine
  • Administration: Oral
  • Presentation: Tablets
  • Available Strength: 10mg
  • Exemption: GSL
  • Dosage: Take 1 tablet daily
  • Description: Clarityn provides all-day relief from hay fever symptoms
  • Drug Class: Antihistamine
  • Alcohol Consumption: No influence
  • When Pregnant: Do not take during pregnant. Speak to your doctor for further information.
  • When Breastfeeding: Do not take while breastfeeding. Speak to your doctor for further information.
  • Price: 4.99 GBP
Click here to view the Clarityn - Patient Information Leaflet

Authored & Reviewed By

Adil Bhaloda

Adil Bhaloda

Adil provides governance for the online services, overseeing prescription dispensation in line with UK pharmacy standards.

Published on: 14/06/2022 Reviewed on: 13/03/2024

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