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Cranberry (Supplement)

Chinese name:

What is Cranberry for?

Cranberry is a fruit that can prevent bacteria from sticking to the walls of your urinary tract. It also contains other nutrients such as Vitamin A, Vitamin C and Vitamin E, Manganese and Copper. It is commonly used to prevent urinary tract infections (UTI) especially in women. However, Cranberry is not effective for treating existing urinary tract infections.

How to use it?

You can get the health benefits from Cranberry either by drinking Cranberry juice or taking Cranberry tablets regularly. There is no strict dosage for Cranberry supplements. You can drink 30-300 mL of Cranberry juice every day (avoid Cranberry cocktails or Cranberry drinks as they contain excess sugar), or take 1-2 Cranberry tablets daily. For specific dosages, refer to the product label.

What are the side effects of Cranberry?

Side effects of taking Cranberry supplement include diarrhoea and kidney stones. You should avoid drinking a large amount of Cranberry juice or taking Cranberry supplement if you are currently taking Warfarin.

Who should not take Cranberry?

No specific situation or population in which Cranberry supplements should not be used have been reported.

Pharmacist Tips:

  • Do not consume too much Cranberry juice as it may lead to dental problems, diarrhoea, and obesity due to the large amounts of sugar.
  • Cranberry supplements are not for the treatment of urinary tract infections (UTIs). You should seek medical advice when you think you have symptoms of UTIs.

Common dosing schedule:
Take Cranberry supplements as per product instructions.


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


Some common medications Cranberry may interact with:

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

Where to buy Cranberry in Hong Kong?

In Hong Kong, Cranberry supplements 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 Cranberry (Supplement) 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
  • 25000mg (Capsules)
Drug class
Sub class
Herbal Medicines
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