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Hydrogen Peroxide

Used for:Oral hygiene, Skin disinfection

What is Hydrogen Peroxide for?

Hydrogen Peroxide can be used as an oxidiser, bleaching agent and antiseptic that can be used for oral hygiene (with Hydrogen Peroxide 6%) and skin disinfection, particularly cleansing and deodorising wounds and ulcers.

How to use it?

Hydrogen Peroxide can be used as a mouthwash or applied topically to the skin. If you want to use it for oral hygiene, you can use Hydrogen Peroxide 6% mouthwash by rinsing or gargling 15 mL 2-3 times daily for 2-3 minutes and remember to dilute the mouthwash in half a tumblerful of warm water. This is applicable to both adults and children. If you want to use it for skin disinfection, particularly cleansing and deodorizing wounds and ulcers, you should apply 3% or 6% Hydrogen Peroxide to the skin and consult product literature for further information.

What are the side effects of Hydrogen Peroxide?

Hydrogen Peroxide rarely causes side effects but allergic reactions may occasionally occur.

Who should not take Hydrogen Peroxide?

Hydrogen Peroxide can be generally used by anyone. However, do not use it in areas with abscesses (pus), deep wounds and closed body cavities.

Pharmacist Tips:

  • Clean the affected skin area before using Hydrogen Peroxide.
  • Do not swallow the oral solution. Spit out after rinsing.
  • Avoid contact with eyes and other mucous membranes.
  • Hydrogen Peroxide can bleach fabrics.

Common dosing schedule:
Use Hydrogen Peroxide as per product instructions.


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


Some common medications Hydrogen Peroxide may interact with:

  • N/A

Where to buy Hydrogen Peroxide in Hong Kong?

In Hong Kong, Hydrogen Peroxide is an over-the-counter medicine which 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 Hydrogen Peroxide 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
  • 65mg/ml (Ear Drops)
  • 3% / 6% (Solution)
Drug class
Sub class
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