> Western Medicines > Emedastine


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What is Emedastine for?

Emedastine is a second-generation antihistamine that can relieve symptoms of seasonal allergic conjunctivitis, including red eyes, itchy eyes and swollen eyelids.

How to use it?

Emedastine is available as an eye drop which may be instilled to the affected eyes. Wash your hands before and after applying this medication.


Seasonal allergic conjunctivitis
Instil 1 drop into the affected eye(s) up to 4 times daily.

What are the side effects of Emedastine?

Common side effects of Emedastine include dry eye, blurred vision, and headache.

Who should not take Emedastine?

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

Pharmacist Tips:

  • Applying the medication to the eye may cause blurred vision. If affected, do not drive or operate machinery.
  • Remove contact lenses prior to eye administration. You may reinsert contact lenses 10 minutes after using the eye drops.

Common dosing schedule:
Emedastine is instilled in the eye up to 4 times daily.


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


Some common medications Emedastine may interact with:

  • Emedastine has no known interactions with common medications.

Where to buy Emedastine in Hong Kong?

In Hong Kong, Emedastine 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 Emedastine 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
  • 0.05% (Eye Drops)
Drug class
Sub class
Antihistamines (Second Generation)
Other drugs in same class
Used for: Seasonal allergic rhinitis, Urticaria
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Used for: Allergies, Hay fever, Urticaria
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Used for: Urticaria, Allergic conditions, Hay fever
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