Medicines & Supplements A to Z > Amitriptyline


Last updated on July 2, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  

GENERIC NAME: Amitriptyline


COMMON BRAND IN HONG KONG: Qualitriptine, Endep, Tripsyl, Tripta

What is Amitriptyline for?

Amitriptyline is a tricyclic antidepressant. It works by balancing the chemicals in your brain which are responsible for regulating your mood. Historically, Amitriptyline was  mostly used to treat depression. It now has many other uses like treating different types of neuropathic pain, preventing migraine and chronic tension-type headache.

How to use it?

Amitriptyline can be taken by mouth. 

If you are taking it for depression, you should start with 25 mg daily at bedtime. The maximum daily dose is 150 mg in 2 divided doses. For the elderly, you should start with 10-25 mg daily and increase up to 100-150 mg daily in 2 divided doses if necessary. The dose increment depends on your response and tolerability. 

If you are taking it for neuropathic pain, migraine or chronic tension-type headache, you should start with 10-25 mg daily in the evening. The dose can be increased 10-25 mg every 3-7 days in 1-2 divided doses if you can tolerate it. The usual dose is 25-75 mg daily. 

What are the side effects of Amitriptyline? 

Common side effects of Amitriptyline include anticholinergic syndrome like confusion, restlessness, dry mouth, urinary retention, blurred vision, increased heart rate, constipation, low blood pressure upon standing (orthostatic hypotension), as well as drowsiness and irregular heart rhythms.

Where to buy Amitriptyline in Hong Kong?

In Hong Kong, Amitriptyline 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 Amitriptyline 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.