> Western Medicines > Cilostazol


Used for: Intermittent claudication
Chinese name:

What is Cilostazol for?

Cilostazol belongs to a class of medications called phosphodiesterase inhibitors. It works by releasing the muscle in blood vessels and preventing your platelet from sticking together. It is used for intermittent claudication, which causes pain in your leg muscle when exercising.

How to use it?

Cilostazol is taken orally as tablets. The usual dose is 100 mg twice daily. Responses may be seen within 2-4 weeks, but beneficial effects may not occur for up to 12 weeks. If no improvement after taking it for 3 months, discontinue the medication.

What are the side effects of Cilostazol?

Common side effects of Cilostazol include headache, palpitation, dizziness, diarrhoea, abnormal stools, infection, and rhinitis.

Who should not take Cilostazol?

  • People who are allergic to Cilostazol or any component of the formulation
  • Patients with heart failure of any severity

Pharmacist Tips:

  • It may take several weeks to see the full effects.
  • This drug may cause you to bleed more easily, so try to avoid injury. Also report any signs of unusual bleeding, such as bruising, non-stop nose bleeding, or coughing blood.

Common dosing schedule:
Cilostazol should be administered 30 minutes before or 2 hours after meals.


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


Some common medications Cilostazol may interact with:

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

Where to buy Cilostazol in Hong Kong?

In Hong Kong, Cilostazol 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 Cilostazol 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
  • 50mg / 100mg (Tablets)
Drug class
Sub class
Phosphodiesterase Inhibitors, Platelet Aggregation Inhibitors
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