> Western Medicines > Clopidogrel


Used for: Prevention of thromboembolic events, Treatment of the acute coronary syndrome
Chinese name:

What is Clopidogrel for?

Clopidogrel belongs to a class of medications called thienopyridines. It is an antiplatelet which blocks the platelet aggregation and blood clot formation. Clopidogrel is therefore used to prevent thromboembolic events and treat acute coronary syndrome (heart attack).

How to use it?

Clopidogrel can be taken by mouth as tablets. The usual maintenance dose of Clopidogrel is 75 mg once daily. Your doctor will decide how long you need to take Clopidogrel based on your medical history and risk of bleeding.

What are the side effects of Clopidogrel?

Common side effects of Clopidogrel include diarrhoea, gastrointestinal discomfort, bleeding, and skin reactions.

Who should not take Clopidogrel?

  • Anyone with active pathological bleeding such as peptic ulcer
  • Anyone who has an allergy to Clopidogrel

Pharmacist Tips:

This drug may cause prolonged and excessive bleeding. Inform your doctor or dentist about the use of Clopidogrel before undergoing any surgeries or dental procedures.


Common dosing schedule:
Clopidogrel may be taken with or without food.


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


Some common medications Clopidogrel may interact with:

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

Where to buy Clopidogrel in Hong Kong?

In Hong Kong, Clopidogrel is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. 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 Clopidogrel 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.

Brands in Hong Kong
Available dosage
  • 75mg / 300mg (Tablets)
Drug class
Sub class
P2Y12 Receptor Antagonists
Other drugs in same class
Used for: Treatment of the acute coronary syndrome, Prevention of thromboembolic events
Chinese name:
Used for: Stable coronary artery disease, Treatment of the acute coronary syndrome, Transient ischemic attack, Acute ischemic stroke
Chinese name:
Used for: Stable coronary artery disease, Treatment of the acute coronary syndrome, Transient ischemic attack, Acute ischemic stroke
Chinese name: