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Quick summary

Type of medicine

Antihistamine Syrup



Active Ingredient

Chlorphenamine Maleate

Effective within

Relief can be observed within a few hours

Works by

Blocking the effects of histamine in the body

Side effects

Drowsiness, Dry Mouth, Blurred Vision, Constipation

Medication details


Piriton Antihistamine Allergy Relief Syrup is a trusted over-the-counter medication designed to provide relief from various allergy symptoms in children. This non-prescription syrup is formulated to effectively alleviate symptoms such as sneezing, runny nose, itchy and watery eyes, and skin irritations caused by allergies. Piriton contains the active ingredient chlorphenamine maleate, which is a first-generation antihistamine known for its ability to counteract the effects of histamine – a natural substance released by the body during allergic reactions.


For children aged 1 to 12 years, follow the dosing instructions carefully to ensure safe and effective use of Piriton Antihistamine Allergy Relief Syrup:

Children aged 1 to 2 years: 2.5ml (half a 5ml spoonful) twice daily.

Children aged 2 to 6 years: 2.5ml (half a 5ml spoonful) every 4 to 6 hours, up to 4 times a day.

Children aged 6 to 12 years: 5ml (one 5ml spoonful) every 4 to 6 hours, up to 4 times a day.

Do not exceed the recommended dose, and ensure that each dose is separated by at least 4 hours. Shake the bottle well before use, and use the provided measuring spoon to ensure accurate dosing.


The active ingredient in Piriton Antihistamine Allergy Relief Syrup is chlorphenamine maleate. Each 5ml of syrup contains 2mg of chlorphenamine maleate. In addition to the active ingredient, the syrup also contains other ingredients, which include:

- Maltitol Solution
- Glycerol
- Citric Acid Monohydrate
- Sodium Benzoate (E211)
- Anthocyanin
- Raspberry Essence
- Purified Water

It's important to note that individuals with a known sensitivity or allergy to any of the listed ingredients should avoid using this product.

Side Effects

Like all medications, Piriton Antihistamine Allergy Relief Syrup can potentially cause side effects, although not everyone will experience them. Common side effects may include drowsiness or sedation, which is more pronounced in some individuals. Other potential side effects can include dry mouth, blurred vision, constipation, and urinary retention. If your child experiences any unusual or severe side effects, discontinue use and consult a healthcare professional.


Before using Piriton Antihistamine Allergy Relief Syrup for Children, it's important to take note of the following precautions and warnings:
This product is intended for use in children aged 1 to 12 years. It is not suitable for infants under 1 year of age.
Always adhere to the recommended dosage instructions. Taking more than the recommended dose may lead to adverse effects.
Consult a healthcare professional before using this product if your child is currently taking other medications or has any underlying medical conditions.
Piriton may cause drowsiness or sedation. Avoid activities that require alertness, such as driving or operating heavy machinery, while using this product.
If your child is sensitive or allergic to any of the listed ingredients, do not use this product.
In case of accidental overdose, seek medical attention immediately, even if no symptoms are present.
Store the syrup in a cool, dry place and keep it out of reach of children.
Do not use this product beyond the expiration date printed on the packaging.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on Oct 11, 2023, 9:45 am

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Please read our FAQs page to find out more.

What age group is this syrup suitable for?

Piriton Antihistamine Allergy Relief Syrup is thoughtfully formulated to cater to the needs of children specifically falling within the age range of 1 to 12 years. This age-appropriate design ensures that children experiencing allergy symptoms can find relief through a product tailored to their developmental stage.

Can I give this syrup to my infant under 1 year old?

It's crucial to prioritize the safety and well-being of your child. Piriton Antihistamine Allergy Relief Syrup is meticulously crafted to be beneficial for children aged 1 to 12 years. However, the formulation is not aligned with the specific needs of infants under the age of 1 year. For the youngest members of your family, seeking guidance from a pediatrician or healthcare professional is a prudent course of action to ensure their health is protected.

Is drowsiness a common side effect?

Yes, it's important to be aware that drowsiness can indeed be a common side effect associated with the use of Piriton Antihistamine Allergy Relief Syrup. The active ingredient, chlorphenamine maleate, has a propensity to induce drowsiness in some individuals, particularly when taken in higher doses. Parents and caregivers should exercise caution, especially when their child is partaking in activities that necessitate heightened alertness, such as operating machinery or engaging in activities requiring focused attention.

How often can I administer the syrup to my child?

The administration frequency of Piriton Antihistamine Allergy Relief Syrup is intricately linked to the age of the child in question. The dosing schedule is as follows:

For children aged 1 to 2 years: It is recommended to administer the syrup twice daily, fostering consistent relief.

For children aged 2 to 6 years: The suggested dosage interval is every 4 to 6 hours, with a maximum of 4 doses within a day.

Children aged 6 to 12 years: Similarly, an interval of every 4 to 6 hours for administration is recommended, with a cap of 4 doses within a day.

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