Cetirizine syrup is a popular antihistamine option in Australia, especially for children and adults who prefer a liquid form of allergy medication. Known for its effectiveness in managing allergy symptoms such as hay fever, allergic rhinitis, and chronic hives, cetirizine syrup offers a convenient and easy-to-administer solution. This blog post provides an overview of cetirizine syrup’s uses, dosing guidelines, safety information, and availability in Australia.
What is Cetirizine Syrup?
Cetirizine syrup contains cetirizine hydrochloride, a second-generation antihistamine that works by blocking histamine H1 receptors. Histamine is a chemical released during allergic reactions that causes symptoms like sneezing, itching, watery eyes, and runny nose. By preventing histamine from binding to its receptors, cetirizine reduces these symptoms without causing significant drowsiness, which is common in older antihistamines.
Uses of Cetirizine Syrup in Australia
Cetirizine syrup is commonly used to relieve symptoms associated with:
- Seasonal Allergic Rhinitis (Hay Fever): Helps reduce sneezing, nasal congestion, runny nose, and itchy, watery eyes caused by pollen and other allergens.
- Perennial Allergic Rhinitis: Manages year-round allergy symptoms triggered by indoor allergens like dust mites, pet dander, and mould.
- Chronic Idiopathic Urticaria (Hives): Reduces itching, redness, and swelling related to chronic hives.
Dosage Recommendations
Cetirizine syrup dosing in Australia is age and weight-dependent:
- Adults and children over 12 years: 10 mg (10 mL or 20 drops) once daily, with or without food.
- Children aged 2 to 12 years: Dosage is calculated based on body weight, typically ranging from 2 mL to 5 mL twice daily. For example:
- 8-14 kg: 2 mL twice daily
- 14-18 kg: 2.5 mL twice daily
- 18-22 kg: 3 mL twice daily
- 22-26 kg: 3.5 mL twice daily
- 26-30 kg: 4 mL twice daily
- Over 30 kg: 5 mL twice daily
- Children under 2 years: Cetirizine syrup is generally not recommended due to the risk of side effects such as diarrhoea caused by sorbitol content. Use only under medical supervision if prescribed.
How to Administer Cetirizine Syrup
- Shake the bottle well before each use to ensure even distribution of the medication.
- Use the measuring device provided to ensure accurate dosing.
- Cetirizine syrup can be taken with or without food.
- Follow the dosing schedule prescribed by your healthcare provider, and do not exceed the recommended dose.
Safety and Side Effects
Cetirizine syrup is generally well tolerated. Common side effects may include:
- Mild drowsiness (less frequent than with first-generation antihistamines)
- Headache
- Dry mouth
- Occasional gastrointestinal upset such as nausea or diarrhoea
If you notice severe allergic reactions like rash, swelling, or difficulty breathing, seek immediate medical attention.
Availability in Australia
Cetirizine syrup is available over the counter and by prescription in Australian pharmacies under various brand names, including Zyrtec Kids Liquid and other generic formulations. The grape-flavored syrup is especially popular among children for its palatable taste.
Summary
Cetirizine syrup is an effective and convenient antihistamine option for managing allergy symptoms in children and adults in Australia. Its liquid form allows for flexible dosing, especially useful for young children who have difficulty swallowing tablets. Always follow your healthcare provider’s instructions regarding dosage and duration, and consult them if symptoms persist or side effects occur.