> Western Medicines > Clarityne


Used for: Urticaria, Allergic conditions, Hay fever
Chinese name:

What is Clarityne for?

Clarityne is a brand product that contains Loratadine, which is a type of second generation antihistamine. Second generation antihistamines are typically non-drowsy, therefore a safer choice for people who need to drive or operate machinery. It is used to treat allergic conditions like allergic rhinitis and hives.

How to use it?

Clarityne is taken orally. It is available as a tablet and syrup for children.
The usual adult dosage is 10 mg once daily. For children between 2-6 years treating allergic symptoms/hay fever, the usual dose is 5 mg once daily.

What are the side effects of Clarityne?

Common side effects of Clarityne include a small degree of drowsiness in some people.

Who should not take Clarityne?

People who are allergic to Loratadine or any component of the formulation.

Pharmacist Tips:

  • Avoid alcohol use while taking this medication as it may cause more drowsiness.
  • Avoid driving or operating machinery until you know how you respond to Clarityne.

Common dosing schedule:
Clarityne can be taken with or without food. It can be taken at any time, but some people prefer to use it in the evening if they anticipate being exposed to a potential allergen the next day.


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


Some common medications Clarityne may interact with:

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

Where to buy Clarityne in Hong Kong?

In Hong Kong, Clarityne is an over-the-counter medicine and 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 https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Clarityne 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.

Available dosage
  • 1mg/ml / 5mg/5ml (Syrup)
  • 10mg (Tablets)
Drug class
Sub class
Antihistamines (Second Generation)
Generic Names
Other drugs in same class