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Fentanyl: 7 things you should know

Medically reviewed by Carmen Pope, BPharm. Last updated on Jan 3, 2024.

1. How it works

2. Upsides

3. Downsides

If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include:

Note: In general, seniors or children, people with certain medical conditions (such as liver or kidney problems, heart disease, diabetes, seizures) or people who take other medications are more at risk of developing a wider range of side effects. View complete list of side effects

4. Bottom Line

Fentanyl is a very potent pain-relieving medicine. It is not recommended for people who have never been prescribed opioid-type pain relief before, and deaths have been reported from improper dosing or abuse.

5. Tips

6. Response and effectiveness

7. Interactions

Medicines that interact with fentanyl may either decrease its effect, affect how long it works, increase side effects, or have less of an effect when taken with fentanyl. An interaction between two medications does not always mean that you must stop taking one of the medications; however, sometimes it does. Speak to your doctor about how drug interactions should be managed.

Common medications that may interact with fentanyl include:

Avoid drinking alcohol or taking illegal or recreational drugs, including cannabis, while taking fentanyl.

Note that this list is not all-inclusive and includes only common medications that may interact with fentanyl. You should refer to the prescribing information for fentanyl for a complete list of interactions.


Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use fentanyl only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Copyright 1996-2024 Revision date: January 2, 2024.