Medicines & Supplements A to Z > Finasteride


Last updated on July 3, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  

GENERIC NAME: Finasteride 


COMMON BRANDS IN HONG KONG: Propecia 保康絲, Proscar 保列治

What is Finasteride for?

Finasteride (Propecia) belongs to a class of medications called 5-alpha reductase blockers. It blocks an enzyme that is necessary for the production of male hormones accounting for the enlargement of the prostate and hair loss. Finasteride can therefore be used  for treating benign prostatic hyperplasia (BPH) and hair loss due to male hormones in men (androgenic alopecia).

How to use it?

Finasteride (e.g. Propecia) can be taken by mouth as tablets. 

If you are using it for benign prostatic hyperplasia (BPH), you should take 5 mg daily. Your doctor will review your treatment plan at 3-6 months, followed by every 6-12 months. You may need to take Finasteride for several months in order to have observable benefits. 

If you are taking it for hair loss, you should take 1 mg daily.

What are the side effects of Finasteride? 

The most common side effect of Finasteride is sexual dysfunction.

Where to buy Finasteride in Hong Kong?

In Hong Kong, Finasteride 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

For detailed information about the use of Finasteride 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.