> Western Medicines > Cetylpyridinium Chloride

Cetylpyridinium Chloride

Used for: Oral hygiene, Sore throat
Chinese name:

What is Cetylpyridinium Chloride for?

Cetylpyridinium Chloride is an antiseptic, which means it kills bacteria that cause minor infections of the mouth and throat.


Cetylpyridinium Chloride is commonly found as an active ingredient in lozenges to provide relief from sore throats.

How to use it?

Cetylpyridinium Chloride is available as a lozenge. Take a lozenge 2-3 times daily as needed.
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 Cetylpyridinium Chloride?

Common side effects of Cetylpyridinium Chloride include oral discomfort, burning sensation of the mouth and allergic skin reactions.

Who should not take Cetylpyridinium Chloride?

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

Pharmacist Tips:

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


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


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


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

Where to buy Cetylpyridinium Chloride in Hong Kong?

In Hong Kong, Cetylpyridinium 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 Cetylpyridinium 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
  • 1.5mg / 2mg (Lozenges)
Drug class
Sub class
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