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Whey Protein (Supplement)

Last updated on 18/03/2021.

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

GENERIC NAME: Whey Protein 


BRAND NAME(S) IN HONG KONG: Beneprotein 蛋白補, MuscleTech, Optimum Nutrition, Protelicious

DRUG CLASS: Macronutrient (protein)

USED FOR: Dietary supplementation

OTHER DRUGS IN THE SAME CLASS: Casein Protein, Soy Protein

What is Whey Protein for?

Whey is the liquid part of curdled milk, while whey protein is a group of proteins isolated from whey including glutamic acid, arginine, albumin and leucine (one of the BCAAs). It can be readily absorbed to provide a quick source of protein. It can hence be taken as a dietary supplement if you cannot take sufficient amount of protein from your diet. The recommended daily dietary intake of protein for adults is 0.8 g/kg. For elderly, the recommended daily dietary intake is 1-1.2 g/kg. For athletes, the recommended daily dietary intake is about 1.2-2 g/kg.

How to use it?

Whey Protein is usually taken by mouth in powder form. You can add the powder into drinks or foods to make it more palatable. The amount of powder added depends on your daily protein needs.

What are the side effects of Whey Protein?

Possible side effects of taking Whey Protein include diarrhea and allergies. You should avoid taking Whey Protein if you have allergies to milk.

Who should not take Whey Protein?

Patients with kidney diseases should not be on a high protein diet, including taking protein supplements.

Pharmacist Tips:

Most people should obtain adequate amounts of Whey Protein from a healthy diet. Protein is present in many foods including red meats, eggs, beans, seafood, poultry and milk.

Common dosing schedule:
Take Whey Protein as per product directions usually once or twice daily. 

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

Some common medications Whey Protein may interact with:


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

Where to buy Whey Protein in Hong Kong?

In Hong Kong, most brands of Whey Protein 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. For specific brands of Whey Protein like Beneprotein, they are pharmacy-only and can be purchased without a prescription from any pharmacy in Hong Kong by speaking with a pharmacist. 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 Whey Protein 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.