> Western Medicines > Temgesic


Used for: Opioid dependence, Moderate to Severe Pain
Chinese name:

What is Temgesic?

Temgesic is a brand medication that contains Buprenorphine, which belongs to a class of medications called opioid analgesics. It works by inhibiting nerve signal transmission of pain in the brain and nervous system. It is a powerful analgesic and is used for severe pain management, for example in chronic pain management for cancer patients.

How to use it?

Temgesic is available as sublingual tablets and injections.


For sublingual tablets, place a tablet under your tongue and let it dissolve. Do not crush, chew or swallow the tablet.


For injections, your doctor will regularly check to see if the dosage should be adjusted based on your level of pain.

Moderate to severe pain
Sublingual: 200-400 mcg every 6-8 hours.
50 kg and above: 200-400 mcg every 6-8 hours.
37.5-50 kg: 200-300 mcg every 6-8 hours.
25-37.5 kg: 100-200 mcg every 6-8 hours.
16-25 kg: 100 mcg every 6-8 hours.

What are the side effects of Temgesic?

Common side effects of Temgesic include constipation, dizziness and drowsiness, dry mouth, euphoric mood, flushing, hallucinations, nausea and vomiting (more common on initiation), respiration depression (with high dose). Mild irritation, itching or redness may occur at the injection site.

Who should not take Temgesic?

  • People who are allergic to Temgesic or any component of the formulation.
  • Patients with respiratory depression, serious bronchial asthma or gastrointestinal obstruction.

Pharmacist Tips:

  • Temgesic can be very addictive and you can become tolerant over time.
  • Do not stop abruptly after prolonged use as it may cause withdrawal effects. 
  • Look out for signs like severe side effects such as difficulty breathing, and report to your doctor immediately.
  • Eat more high-fibre foods, drink more water and do more exercise to reduce the side effects of constipation.
  • Avoid alcohol while you are taking this medicine.

Common dosing schedule: 
Take every 6-8 hours or as required.

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


Some common medications Temgesic may interact with:

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

Where to buy Temgesic in Hong Kong?

In Hong Kong, Temgesic 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 Temgesic 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
  • 0.3mg/ml (Injections)
  • 0.2mg (Sublingual Tablets)
Drug class
Drugs In Substance Dependence, Analgesics
Sub class
Opioid Analgesics
Generic Names
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