Medicines & Supplements A to Z > Collagen


Last updated on 30/07/2021.

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


ALTERNATIVE NAME: Collagen peptides


BRAND NAME(S) IN HONG KONG: Vital Proteins, Grass-Fed Collagen Peptides

DRUG CLASS: Supplements

SUB CLASS: Dietary Supplements

USED FOR: Osteoarthritis, Skin Beauty

– (liquid)
– (capsules)

What is Collagen for?

Collagen is the most abundant protein in the human body, particularly forming connective tissues. Medically, Collagen is used for surgeries such as heart valve replacements, reconstruction of bones. It is also used in wound dressings to facilitate healing and avoid scar formation. Collagen is the major source of capsule shells. Collagen peptides are protein pieces obtained from animal Collagen, and is the type of Collagen for supplements. They are claimed to improve aged skins, osteoarthritis, burns and eczema.

How to use it?

Collagen is available in liquid, capsule and powder for oral use.

Aged Skin
2.5-10g daily for 8-12 weeks.
50ml daily. (liquid)

10g daily or 10g twice daily.

What are the side effects of Collagen?

There are no reported side effects.

Who should not take Collagen?

People who are allergic to Collagen or any components of the formulation.

Pharmacist Tips:

– The effect of Collagen supplement on humans is not fully recognized and understood.
– Dosing schedule differs from brands and products.
– It is advised not to take too much to prevent unknown side effects and to maintain a healthy diet.
– For chronic disease patients, please seek advice from medical professionals before taking any supplements. 

Common dosing schedule:
Please refer to your medical professionals and the drug insert. 

Some common medications Collagen may interact with:
There is not enough evidence to show any drug interactions.

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

Where to buy Collagen in Hong Kong?

In Hong Kong, Collagen 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

Need more information?

For detailed information about the use of Collagen 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.