Medicines & Supplements A to Z > Desvenlafaxine


Last updated on July 26, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  

GENERIC NAME: Desvenlafaxine



What is Desvenlafaxine for?

Desvenlafaxine belongs to a class of medications called selective serotonin and norepinephrine reuptake inhibitors (SNRIs). SNRIs are antidepressants which work by allowing some chemicals, mainly serotonin and norepinephrine, but also dopamine to stay longer in the brain in order to boost mood. It is usually used to treat depression and menopausal symptoms. Desvenlafaxine is actually the active metabolite of Venlafaxine.

How to use it?

In Hong Kong, Desvenlafaxine is only available in extended-release tablets. When you are taking a extended-release tablet, swallow the whole tablet but do not crush, chew or cut the tablet. Do not discontinue the drug abruptly without any professional advice. Avoid drinking alcohol when you are taking Desvenlafaxine.

The dosages for different uses are listed as follows:

For major depression

Adult: Take 50 mg once daily with or without meal. Take each dose at a similar time every day.

For menopausal symptoms

Adult: Usually start with 25-50 mg once daily. Doses may be increased to 100 mg once daily.

What are the side effects of Desvenlafaxine?

Desvenlafaxine can cause side effects including anxiety, insomnia, diarrhoea, headache, sexual dysfunction, and nausea. 

Where to buy Desvenlafaxine in Hong Kong?

In Hong Kong, Desvenlafaxine 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 Desvenlafaxine 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.