Medicines & Supplements A to Z > Cranberry (Supplement)

Cranberry (Supplement)

Last updated on July 30, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  




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 cocktail or Cranberry drink 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.

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

For detailed information about the use of Cranberry 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.