Drug interactions
Fentanyl + Trofinetide
Severity: Minor
Fentanyl and Trofinetide: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Trofinetide is a weak CYP3A4 inhibitor and may slightly raise fentanyl levels. The effect is usually small but could matter for sensitive patients.
What this interaction means in plain words
Fentanyl and Trofinetide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fentanyl belongs to Musculoskeletal; Trofinetide belongs to Central Nervous System.
Why it happens
Weak CYP3A4 inhibition reduces fentanyl clearance.
What to do
Monitor for increased sedation or slowed breathing, and reduce the fentanyl dose if these occur.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Fentanyl
- Alvimopan + Fentanyl Contraindicated
- Fentanyl + Isocarboxazid Contraindicated
- Fentanyl + Olanzapine / samidorphan Contraindicated
- Fentanyl + Phenelzine Contraindicated
- Fentanyl + Tranylcypromine Contraindicated
- Alfentanil + Fentanyl Major
Other interactions of Trofinetide
Frequently asked questions
Can I take Fentanyl with Trofinetide?
MediHelp rates the interaction as minor. Fentanyl and Trofinetide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Trofinetide is a weak CYP3A4 inhibitor and may slightly raise fentanyl levels. The effect is usually small but could matter for sensitive patients.
How serious is the interaction between Fentanyl and Trofinetide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for increased sedation or slowed breathing, and reduce the fentanyl dose if these occur.
What other medicines interact with Fentanyl?
MediHelp also lists interactions of Fentanyl with, for example, Alvimopan, Isocarboxazid, Olanzapine / samidorphan. The full list is on the Fentanyl page.
Full monographs, dosing and an interaction checker in the MediHelp app
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