Medicines & Supplements A to Z > Glucosamine


Last updated on 22/03/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Glucosamine


BRAND NAME(S) IN HONG KONG: ArthroChoice Advanced Joint Support, Cosamine Powder, Doctor’s Choice Joints Capsule 醫之選保護關節配方, Voltaflex, Viartril-S 維固力

DRUG CLASS: Dietary supplement

USED FOR: Osteoarthritis


– 314mg, 500mg (capsules)
– 1500mg (sachets)

What is Glucosamine for?

Glucosamine is a dietary supplement to support the structure and function of joints. It is commonly used in people with joint pain from osteoarthritis.

How to use it?

Glucosamine can be taken orally. The usual adult dosage is 500 mg three times daily or 1500 mg once daily.

Viartril-S is also available in injection form, which is a prescription product.

What are the side effects of Glucosamine?

Generally glucosamine is well-tolerated. Some uncommon side effects include constipation, stomach upset, rash, and dizziness. Glucosamine may rarely increase your blood sugar level. If you have diabetes, keep an eye on any changes in your blood sugar while using Glucosamine.

Who should not take Glucosamine?

Anyone who has an allergy to Glucosamine or shellfish.

Pharmacist Tips:

Glucosamine is a dietary supplement for joint health. Glucosamine can also provide symptomatic relief to pain caused by mild to moderate osteoarthritis. Therefore, for patients who have knee pain but cannot take NSAIDs (e.g. Ibuprofen, Diclofenac), glucosamine might be worth a try.

Common dosing schedule:
Take with food or meals.

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

Some common medications Glucosamine may interact with:
Etoposide (a type of cancer medication)

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

Where to buy Glucosamine in Hong Kong?

In Hong Kong, oral Glucosamine 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. As for injectable Glucosamine, it is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. Both preparations of Glucosamine 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

Need more information?

For detailed information about the use of Glucosamine 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.