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Clarityn Allergy 1 mg / ml syrup – patient leaflet, side effects, dosage

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Medicine strength:
1 mg / ml
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Patient leaflet - Clarityn Allergy 1 mg / ml syrup

1. What Clarityn Allergy Syrup is and what it is used for

The full name of your medicine is Clarityn Allergy Syrup. What Clarityn Allergy Syrup is

Clarityn Allergy Syrup contains the active substance loratadine which belongs to a class of medicines called “antihistamines”. How Clarityn Allergy Syrup works

Clarityn Allergy Syrup helps to reduce your allergy symptoms by stopping the effects of a substance called “histamine”, which is produced in the body when you are allergic to something. When Clarityn Allergy Syrup should be taken

Clarityn Allergy Syrup relieves symptoms associated with allergic rhinitis (for example, hayfever), such as sneezing, runny or itchy nose and burning or itchy eyes in adults and children over the age of 2 years.

The syrup may also be used to help relieve symptoms of urticaria (itching and redness), which is often known as hives or nettle rash.

The effect of Clarityn Syrup will last a whole day and should help you to continue your normal daily activities and sleep. You must talk to a doctor if you do not feel better or if you feel worse.

2. What you need to know before you take Clarityn Allergy Syrup

Do not take Clarityn Allergy Syrup

  • if you are allergic (hypersensitive) to loratadine or any of the other ingredients of this medicine (listed in section 6) • if you are pregnant or breast-feeding

Warnings and precautions

Talk to your doctor, pharmacist or nurse before taking Clarityn Allergy Syrup:

  • if you have liver disease
  • if you are scheduled to have any skin tests for allergies. Do not take Clarityn Allergy Syrup for two days before having these tests. This is because it may affect test results. If any of the above apply to you (or you are not sure), talk to your doctor, pharmacist or nurse before taking Clarityn Allergy Syrup.

    Children

    Do not give Clarityn Allergy Syrup to children younger than 2 years old.

    Other medicines and Clarityn Allergy Syrup

    The side effects of Clarityn Allergy Syrup may increase when used together with medicines that alter the performance of some enzymes responsible for drug-metabolism in the liver. However, in clinical studies, no increase in side effects of loratadine was seen with products that altered the performance of these enzymes.

    Tell your doctor, pharmacist or nurse if you are taking, have recently taken or might take any other medicines. This includes medicines obtained without a prescription.

    Clarityn Allergy Syrup with alcohol

    Clarityn Allergy Syrup has not been shown to add to the effects of an alcoholic drink.

    Pregnancy and breast-feeding

    If you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine. As a precautionary measure, it is preferable to avoid the use of Clarityn Allergy Syrup during pregnancy.

    Do not take Clarityn Allergy Syrup if you are breast-feeding. Loratadine is excreted in breast milk.

    Driving and using machines

    In clinical trials that assessed driving ability, no impairment was observed in patients receiving loratadine. At the recommended dose, Clarityn Allergy Syrup is not expected to cause you to be drowsy or less alert. However, very rarely some people experience drowsiness, which may affect their ability to drive or use machines.

    Clarityn Allergy Syrup contains:

    Maltitol liquid: This medicine contains 3g maltitol liquid in each 5ml of syrup which is equivalent to 600.69mg/ml. If you have been told by your doctor that you (or your child) have an intolerance to some sugars, contact your doctor before taking this medicine.

    Sorbitol: This medicine contains 700mg sorbitol in each 5ml of syrup which is equivalent to 140mg/ml. Sorbitol is a source of fructose.

    If your doctor has told you that you (or your child) have an intolerance to some sugars or if you have been diagnosed with hereditary fructose intolerance (HFI), a rare genetic disorder in which a person cannot break down fructose, talk to your doctor before taking this medicine.

    Propylene glycol: This medicine contains 250mg propylene glycol in each 5ml of syrup which is equivalent to 50mg/ml. Sodium benzoate: This medicine contains 2.5mg sodium benzoate in each 5ml of syrup which is equivalent to 0.5mg/ml. Sodium: This medicine contains less than 1mmol sodium (23mg) per 5ml of syrup, that is to say essentially ‘sodium-free’.

3. How to take Clarityn Allergy Syrup

Always take this medicine exactly as described in this leaflet or as your doctor, pharmacist or nurse has told you. Check with your doctor, pharmacist or nurse if you are not sure. Taking this medicine

  • Water or other liquid is not needed to swallow the syrup. • The syrup may be taken with or without food.

Loratadine

Allergy 1mg/ml Syrup

31000642

180 mm

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PIL 238 x 180 Point Claire Claritin

Clarityn

Syrup

Leaflet

UK

Connaught House, Connaught Road, Kingswood Business Park, Hull, HU7 3AP, England.

T: +44 (0) 1482 828100

Please note that any low resolution paper Canon colour copies associated with this job should be referred to for

content, layout and colour separation only.

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60ml Pack

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16/09/20

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TR1949353

Philip Ives

G=1; O=0; R=0; - PI - 16/09/20 13:39:03 N/A

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Delpharm Montreal Canada QC [CA] CCL Montréal

White Paper

12
DIGDI

G

Giving this medicine to children:

It is important to know how much your child weighs to make sure that you give the correct amount of medicine. For example, a 9 year old child weighs about 30kg (4st 7lb). If in doubt weigh your child and then follow the instructions in the table.

Do not give to children under 2 years.

How much to take:

The recommended dose is:

If you take more syrup than you should

If you take more Clarityn Allergy Syrup than you should, talk to your doctor or pharmacist straight away. No serious problems are expected, however you may get a headache, have a rapid heartbeat or feel sleepy.

If you forget to take your syrup

If you forget to take your dose, take it as soon as you remember, then continue to take it as usual. • Do not take a double dose to make up for a forgotten dose.

If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

The most commonly reported side effects in adults and children over 12 years of age are:

  • drowsiness
  • headache
  • increased appetite
  • difficulty sleeping

The most commonly reported side effects in children aged 2 through 12 years are:

  • headache
  • nervousness
  • tiredness

The following very rare side effects (may affect up to 1 in 10,000 people) have also been seen during the marketing of loratadine:

  • severe allergic reaction (including swelling) • dizziness
  • convulsion
  • fast or irregular heartbeat
  • nausea (feeling sick)
  • dry mouth
  • upset stomach
  • liver problems
  • hair loss
  • rash
  • tiredness

The frequency of the following side effect is not known: • weight gain

Reporting of side effects

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:

http://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 more information on the safety of this medicine.

5. How to store Clarityn Allergy Syrup

  • Keep this medicine out of the sight and reach of children. • Do not freeze. Keep the bottle in the outer carton in order to protect from light.
  • Do not use this medicine after the expiry date which is stated on the bottle after ‘EXPIRY’. The expiry date relates to the last day of that month.
  • Clarityn Allergy Syrup is to be used within 1 month after opening.
  • Do not use this medicine if you notice any changes in the appearance of the syrup.
  • Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help to protect the environment.

6. Contents of the pack and other information

What Clarityn Allergy Syrup contains

  • The active substance is loratadine. Each 10ml of the syrup contains 10mg loratadine.
  • The other ingredients are disodium edetate (E386), sodium dihydrogen phosphate dihydrate (E339), maltitol liquid (E965), propylene glycol (E1520), glycerol (E422), phosphoric acid (E338), sodium benzoate (E211), sorbitol liquid (E420), sucralose (E955), artificial mixed berries flavour and purified water.

What Clarityn Allergy Syrup looks like and contents of the pack

Clarityn Allergy Syrup is a clear, colourless to light yellow syrup. Clarityn Allergy Syrup is available in white opaque plastic bottles of 60ml with a tamper-evident, childproof plastic cap. A measuring cup with 5ml and 10ml dosing lines is included.

Not all bottle sizes may be marketed.

Marketing Authorisation Holder and Manufacturer Marketing Authorisation Holder:

Bayer plc

400 South Oak Way

Reading

RG2 6AD

United Kingdom

Manufacturer:

BerliMed S.A.

Poligono Industrial Santa Rosa

Calle Francisco Alonso No.7

28806 Alcalá de Henares (Madrid)

Spain

This leaflet was last revised in June 2020.

AgeHow much to takeHow often to take

Children of 2 to 12 years who weigh 30kg (4st 7lb) or less

Children of 2 to 12

5ml

(measuring cup filled to 5ml line) 10ml

Once daily

Once daily

years who weigh more than 30kg (4st 7lb)(measuring cup filled to 10ml line)
Adults and children over 12 years

10ml

(measuring cup filled to 10ml line)

Once daily
If you have severe liver problems your doctor or pharmacist may advise you to take the recommended amount every other day. If this applies to you follow their instructions.

180 mm

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 00010/0656

Last revision stated in the text: June 2020 · MHRA data as of 13 October 2026

What the sections and the side effect frequencies mean: How to read a patient leaflet

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Clarityn Allergy 1 mg / ml syrup

What these facts mean

Active substance? Loratadine
Strength? 1 mg / ml
Pharmaceutical form? Clear, colourless to light yellow syrup.
Excipients? Disodium edetate (E386), Sodium dihydrogen phosphate dihydrate (E339), Maltitol liquid (E965), Propylene glycol (E1520), Glycerol (E422), Phosphoric acid (E338) (to adjust pH), Sodium benzoate (E211), Sucralose (E955), Sorbitol liquid (E420), Artificial mixed berries flavour, Purified water
Shelf life? 36 months; after first opening, the syrup is stable for 1 month.
Storage Do not freeze.
Keep the bottle in the outer carton in order to protect from light.
Drug group (ATC)? Antihistamines - H1 antagonist
  1. R Respiratory system drugs
    1. R06 Antihistamines for systemic use
      1. R06A Antihistamines for systemic use
        1. R06AX Other antihistamines for systemic use
          1. R06AX13 loratadine
Marketing authorisation? PL 00010/0656 (first authorised 16 March 1992)
Marketing authorisation holder? Bayer plc

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 11.1.0 of 9 November 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.