Drug interactions
Perphenazine + Tapentadol
Severity: Moderate
Perphenazine and Tapentadol: moderate 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
Combining an opioid analgesic with a sedating phenothiazine antipsychotic can deepen drowsiness, slow psychomotor performance and, at higher doses, depress breathing and lower blood pressure. The risk is greatest in older or opioid-naive patients and when doses are being escalated.
What this interaction means in plain words
Perphenazine and Tapentadol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Perphenazine belongs to Central Nervous System; Tapentadol belongs to Musculoskeletal.
Why it happens
Additive CNS depression from mu-opioid agonism and antipsychotic antihistaminic, anticholinergic and alpha-blocking effects.
What to do
Start with the lowest effective tapentadol dose and titrate slowly while monitoring sedation and respiratory rate. Advise patients to avoid driving and alcohol.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Methylene blue + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
Other interactions of Perphenazine
- Ibutilide + Perphenazine Contraindicated
- Perphenazine + Pimozide Contraindicated
- Perphenazine + Thioridazine Contraindicated
- Adagrasib + Perphenazine Major
- Alfentanil + Perphenazine Major
- Amiodarone + Perphenazine Major
Frequently asked questions
Can I take Perphenazine with Tapentadol?
MediHelp rates the interaction as moderate. Perphenazine and Tapentadol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Combining an opioid analgesic with a sedating phenothiazine antipsychotic can deepen drowsiness, slow psychomotor performance and, at higher doses, depress breathing and lower blood pressure. The risk is greatest in older or opioid-naive patients and when doses are being escalated.
How serious is the interaction between Perphenazine and Tapentadol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with the lowest effective tapentadol dose and titrate slowly while monitoring sedation and respiratory rate. Advise patients to avoid driving and alcohol.
What other medicines interact with Tapentadol?
MediHelp also lists interactions of Tapentadol with, for example, Calcium / magnesium / potassium / sodium oxybates, Isocarboxazid, Linezolid. The full list is on the Tapentadol page.
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