> Western Medicines > Desloratadine


Used for: Allergies, Hay fever, Urticaria
Chinese name:

What is Desloratadine for?

Desloratadine is a non-drowsy (second-generation) antihistamine medication like Cetirizine, which is used to treat and prevent allergies. Allergic conditions include 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. Desloratadine is often combined with a decongestant such as Pseudoephedrine, which may be more effective when you have nasal congestion.

How to use it?

Desloratadine is taken by mouth as tablets (including modified-release tablets) and syrup once per day. The dosage used in different age groups is listed as below:


Children aged 6-11 months
1 mg once daily.


Children aged 1-5 years
1.25 mg once daily.


Children aged 6-11 years
2.5 mg once daily


Children aged 12 years and adults
5 mg once daily

What are the side effects of Desloratadine?

Desloratadine has very few side effects. In most people when taken at the usual dosage it does not cause drowsiness. However, some people may experience a small degree of drowsiness. Avoid driving or operating machinery until you know how you respond to Desloratadine.

Who should not take Desloratadine?

  • People who are allergic to Desloratadine or any ingredient of the formulation.

Pharmacist Tips:

  • Do not break, chew or open the modified-release preparation. Swallow whole with water.

Common dosing schedule: 
You can take Desloratadine with or without food.


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


Some common medications Desloratadine may interact with:

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

Where to buy Desloratadine in Hong Kong?

In Hong Kong, Desloratadine is an over-the-counter medicine which can be purchased without a prescription by speaking with a pharmacist in a pharmacy in Hong Kong. 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 https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Desloratadine 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.

Brands in Hong Kong
Available dosage
  • 5mg (Tablets)
  • 0.5mg/ml (Syrup)
Drug class
Sub class
Antihistamines (Second Generation)
Other drugs in same class