Drug interactions
Fentanyl + Prochlorperazine
Severity: Major
Fentanyl and Prochlorperazine: major 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
Both drugs depress the central nervous system, and combined use can produce profound sedation, hypotension and respiratory depression. Severe cases may lead to coma or death.
What this interaction means in plain words
Fentanyl and Prochlorperazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Fentanyl belongs to Musculoskeletal; Prochlorperazine belongs to Central Nervous System.
Why it happens
Additive CNS and respiratory depression through opioid receptor agonism and phenothiazine sedative and hypotensive effects.
What to do
Use the lowest effective doses for the shortest time, and consider reducing the dose of one or both. Monitor sedation, respiratory rate and blood pressure.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Prochlorperazine
- Dronedarone + Prochlorperazine Contraindicated
- Ibutilide + Prochlorperazine Contraindicated
- Nilotinib + Prochlorperazine Contraindicated
- Pimozide + Prochlorperazine Contraindicated
- Prochlorperazine + Thioridazine Contraindicated
- Amiodarone + Prochlorperazine Major
Other interactions of Fentanyl
- Alvimopan + Fentanyl Contraindicated
- Fentanyl + Isocarboxazid Contraindicated
- Fentanyl + Olanzapine / samidorphan Contraindicated
- Fentanyl + Phenelzine Contraindicated
- Fentanyl + Tranylcypromine Contraindicated
- Alfentanil + Fentanyl Major
Frequently asked questions
Can I take Fentanyl with Prochlorperazine?
MediHelp rates the interaction as major. Fentanyl and Prochlorperazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs depress the central nervous system, and combined use can produce profound sedation, hypotension and respiratory depression. Severe cases may lead to coma or death.
How serious is the interaction between Fentanyl and Prochlorperazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses for the shortest time, and consider reducing the dose of one or both. Monitor sedation, respiratory rate and blood pressure.
What other medicines interact with Prochlorperazine?
MediHelp also lists interactions of Prochlorperazine with, for example, Dronedarone, Ibutilide, Nilotinib. The full list is on the Prochlorperazine page.
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