Medicines & Supplements A to Z > Trazodone


Last updated on July 3, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  



COMMON BRANDS IN HONG KONG: Trittico, Trazopress, Mesyrel

What is Trazodone for?

Trazodone is an antidepressant that works by balancing different chemicals in your brain to improve your mood. Trazodone is therefore used to treat depression. Because of its sedating effects it is also used for insomnia and in people with dementia who are agitated.

How to use it?

Trazodone can be taken by mouth as conventional tablets or prolonged release tablets. For prolonged release tablets, they cannot be chewed or crushed so you need to swallow whole. 

If you are taking it to treat depression, you should start with 150 mg (or 100 mg for elderly) daily after food in divided doses OR 150 mg (or 100 mg for elderly) once daily at bedtime. The dose can be increased to 300 mg daily or 600 mg daily in divided doses if necessary. When used for insomnia, starting doses range from 12.5 to 100 mg at bedtime.

What are the side effects of Trazodone? 

Common side effects of Trazodone include diarrhoea, drowsiness, dizziness, fatigue, nausea and vomiting, blurred vision, weight changes, dry mouth, stuffy nose, constipation, headache, and sexual dysfunction.

Where to buy Trazodone in Hong Kong?

In Hong Kong, Trazodone 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 Trazodone 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.