> Western Medicines > Dequalinium Chloride

Dequalinium Chloride

Used for: Sore throat
Chinese name:

What is Dequalinium Chloride for?

Dequalinium Chloride is commonly found as an active ingredient in lozenges to provide relief from sore throats. It is an antiseptic, which means it kills bacteria that cause minor infections of the mouth and throat. The action of sucking a lozenge allows the active ingredients to work in the area of discomfort and also lubricate and soothe the pain. This alleviates the pain and discomfort of mouth and throat infections.

How to use it?

Dequalinium Chloride is available as a lozenge which may be used by children over 6 years and adults. Suck one lozenge every 2-3 hours. Use as needed and use no more than 8 lozenges daily.


Allow the lozenge to dissolve slowly and completely. This may take 15 to 30 minutes. Do not eat or drink or wash your mouth immediately after as this may wash away the medication.

What are the side effects of Dequalinium Chloride?

Using large amounts of Dequalinium Chloride may cause gastrointestinal discomfort.

Who should not take Dequalinium Chloride?

  • People who are allergic to Dequalinium Chloride or any component of the formulation
  • Children under 6 years of age

Pharmacist Tips:

If you use a lozenge, allow the lozenge to dissolve in your mouth to exert its effects effectively. Do not chew or swallow.


Common dosing schedule:
Take one lozenge every 2-3 hours as needed.


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


Some common medications Dequalinium Chloride may interact with:
Dequalinium Chloride has no known interactions with common medications.

Where to buy Dequalinium Chloride in Hong Kong?

In Hong Kong, Dequalinium Chloride 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 Dequalinium Chloride 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
  • 0.25mg (Lozenges)
Drug class
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