Chinese name:

What is Duodart for?

Duodart is a brand product which combines two ingredients, Dutasteride and Tamsulosin, which is a 5-alpha reductase inhibitor and an alpha blocker respectively. Dutasteride works by reducing the production of a hormone that is known to induce prostate enlargement in men, while Tamsulosin relaxes the muscles in the bladder and prostate to improve urine outflow. Duodart is therefore used to treat benign prostatic hyperplasia (BPH) in men.

How to use it?

Duodart is available as capsules only. The usual recommended dose is 1 capsule once daily, taken ~30 minutes after the same meal each day.

What are the side effects of Duodart?

Common side effects of Duodart include impotence, ejaculatory disorder, decreased sex drive and dizziness.

Who should not take Duodart?

  • People who are allergic to Dutasteride, Tamsulosin, other 5-alpha-reductase inhibitors, or any component of the formulation
  • Women (especially pregnant women) and children

Pharmacist Tips:

  • Pregnant women should not take or touch Duodart.
  • If you experience dizziness, sit up and down slowly for at least 30 minutes after taking it.
  • Do not donate blood while using this drug and for 6 months after stopping.

Common dosing schedule:
Duodart should be taken once daily, 30 minutes after the same meal every day.

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


Some common medications Duodart may interact with:

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

Where to buy Duodart in Hong Kong?

In Hong Kong, Duodart 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 Duodart 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.

Available dosage
  • 0.5mg/0.4mg (Capsules)
Drug class
Vasodilators, Antiandrogens
Sub class
5-Alpha Reductase Inhibitors, Alpha Blockers