Medicines & Supplements A to Z > Levocetirizine


Last updated on 19/03/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Levocetirizine 


BRAND NAME(S) IN HONG KONG: Alcet, Cetizal, Levoril, Lisinex, Xyzal 

DRUG CLASS: Antihistamine (second-generation)

USED FOR: Symptomatic relief of allergy, nasal congestion and sneezing associated with cold 

OTHER DRUGS IN THE SAME CLASS: Azelastine, Cetirizine, Desloratadine, Fexofenadine , Loratadine , Ketotifen

– 5mg (tablets)
– 5mg/ml (oral drops)

What is Levocetirizine for?

Levocetirizine is a non-drowsy (second-generation) antihistamine medication used to treat and prevent allergic conditions including hay fever (allergic rhinitis) and hives (urticaria). Antihistamines can also be used to manage the symptoms of the common cold such as runny nose and sneezing. Levocetirizine relieves symptoms of itching, runny nose, watery eyes and sneezing. It is an isomer of Cetirizine and hence it has the same pharmacological effects as Cetirizine.

How to use it?

Levocetirizine is taken by mouth as tablets, oral solution, or oral drops. The dose for children older than 12 years old and adults is 5 mg once daily. For children aged 6-11, the dose is 2.5 mg daily. Levocetirizine is usually taken in the evening.

What are the side effects of Levocetirizine?

Levocetirizine has very few side effects. In most people when taken at usual doses, it does not cause any drowsiness. However, some people may experience a small degree of drowsiness. It is best to avoid driving or operating machinery until you know how you respond to Levocetirizine.

Who should not take Levocetirizine?

– Anyone who is allergic to Levocetirizine, Cetirizine, or any component in the preparation.
– Anyone with end-stage renal disease.
– Infants and children 6 months to 11 years old with impaired renal function.

Pharmacist Tips:

1. Levocetirizine may lower mental alertness, although it is rare. You should be careful with skilled tasks such as driving and cycling, and avoid alcohol.
2. Elderly patients should use the drug with caution.

Common dosing schedule:
Levocetirizine is usually taken in the evening.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Levocetirizine may interact with:
Ipratropium (inhalation)
– Other antihistamine, e.g. Chlorpheniramine, Diphenhydramine, Fexofenadine, Hydroxyzine, Loratadine, Promethazine

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Levocetirizine in Hong Kong?

In Hong Kong, Levocetirizine is an over-the-counter medicine which can be purchased without a prescription from any retail outlet in Hong Kong. This includes grocery stores, convenience stores, medicine shops, and pharmacies. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health. 

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Levocetirizine in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.