Name: Cetirizine
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What is Cetirizine?
Cetirizine hydrochloride is an active ingredient, known as an antihistamine, used to relieve the unpleasant symptoms of allergies.
This medicine is suitable for use to treat children from the age of 2 years old. It is a non-drowsy medicine, unlike older antihistamines, allowing you to get on with your day.
What is Cetirizine used for?
Cetirizine effectively relieves symptoms of allergies caused by substances such as pollen, pet fur, dust mites, insect bites or stings and laundry detergents.
Symptoms of allergies that Cetirizine help to reduce include:
· Inflammation in your nose and eyes
· Sneezing and watery eyes
· Itchy skin rash on the skin
How does Cetirizine work?
Antihistamines such as Cetirizine work by blocking the action of histamine, a substance naturally produced in the body that causes symptoms of allergic reaction. It is known as a non-drowsy antihistamine because unlike older medicines it does have an impact on the brain.
Cetirizine works in most people for around 24 hours and has a half-life of around 10 hours. It is slowly eliminated by the kidneys and is excreted in the urine.

Attribute	Description
Type of Medicine	Antihistamine
Strength	10mg
Suitable for	Adults and children over 6 years
Mechanism of Action	Blocks histamine receptors to alleviate allergy symptoms
Common side effects	Drowsiness, headache, dry mouth, nausea, abdominal pain, diarrhea, sore throat
Dosage	Adults and children over 12 years: 10mg once daily Children 6-12 years: 5mg twice daily
Route of administration	Oral
Use with Alcohol	Caution advised due to potential additive sedative effects

This overview table provides essential information about Cetirizine 10mg tablets.

Cetirizine side effects
In the same way as other medications, Cetirizine may cause some people to experience side effects. These side effects are usually mild but if you are concerned or they do not improve speak to a doctor for advice.
The most frequently reported side effects are:
o Feeling tired or dizzy
o Dry mouth
o Headache
o Feeling sick or abdominal pain
o Diarrhoea
o Sore throat
If you experience severe side effects or an allergic reaction while using Cetirizine you must either call 999 or attend your nearest emergency department as soon as possible.
For more information please read the Patient Information Leaflet.
Cetirizine hydrochloride dosage
Cetirizine is for oral use only and can be taken by both adults and children to treat symptoms of mild-moderate allergies.
10mg tablets:
· Children between 6 - 12 years old take half a tablet twice a day
· Children and adults over 12 years old take one tablet daily
Patient Information leaflet https://www.medicines.org.uk/emc/files/pil.3474.pdf

Frequently asked questions

When does hay fever season occur and why is it more prevalent during certain months?
Hay fever season typically spans late March to September, aligned with increased pollen counts in warm, humid and windy conditions. During this period, trees, grasses and weeds release pollen into the air as part of their reproductive process. The higher temperatures and longer daylight hours contribute to the flourishing of plants, intensifying the pollen concentration in the atmosphere. This elevated pollen exposure heightens allergic reactions, making these months particularly challenging for individuals prone to hay fever,
What sets hay fever apart from the common cold and how long does it last?
Hay fever distinguishes itself by persisting for weeks or even months, in contrast to the shorter duration of a common cold, which usually resolves within 1 or 2 days.
Can hay fever be prevented or cured and what measures can be takes for symptom relief?
Hay fever, unfortunately, lacks a cure and complete prevention is challenging. However, various strategies can effectively manage symptoms. Our guide provides actionable tips and relief during peak pollen periods.
How can I enhance hay fever management at home during periods of high pollen activity?
Self-management plays a crucial role in reducing hay fever impact. Simple measures like using Vaseline to trap pollen, wearing protective sunglasses and keeping living spaces pollen-free contribute to effective symptom control
Is hay fever linked to other health conditions and how can it affect individuals with asthma?
Severe hay fever symptoms can significantly impact daily activities. Our guide outlines precautions, such as staying indoors during peak pollen times and avoiding smoke exposure, to minimise discomfort.