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HealthInfo Canterbury


Fentanyl is an opiate medicine, similar to morphine. that can relieve pain. It is used for severe pain in patients who can't take morphine for any reason, such as allergy, side effects, vomiting, or not being able to swallow.

Fentanyl is most often given through a patch that you put on your skin, and then absorb into your blood.

What side effects might I get from fentanyl?

Fentanyl can cause a few side effects, including breathing problems, drowsiness, dizziness, dry mouth, constipation, nausea (feeling sick), itching, or a skin rash. If you are having problems with any of these side effects, it's important to tell your doctor or nurse.

This leaflet from Canterbury DHB has clear instructions on how to use your fentanyl patch.

Written by HealthInfo clinical advisers. May 2017.

Page reference: 360269

Review key: HIPAL-17434