Drug interactions
Nefazodone + Tapentadol
Severity: Moderate
Nefazodone 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
Nefazodone has serotonergic activity and inhibits CYP3A4, and tapentadol also has serotonergic and noradrenergic effects. Together they may raise the risk of serotonin syndrome, although tapentadol is mainly cleared by glucuronidation so exposure changes are limited.
What this interaction means in plain words
Nefazodone 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.
Why it happens
Additive serotonergic effects from nefazodone's serotonin reuptake inhibition and 5-HT2A antagonism with tapentadol's monoaminergic activity.
What to do
Monitor for agitation, tremor, clonus, hyperthermia and diarrhea, particularly after dose changes. Use the lowest effective doses.
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
Frequently asked questions
Can I take Nefazodone with Tapentadol?
MediHelp rates the interaction as moderate. Nefazodone 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. Nefazodone has serotonergic activity and inhibits CYP3A4, and tapentadol also has serotonergic and noradrenergic effects. Together they may raise the risk of serotonin syndrome, although tapentadol is mainly cleared by glucuronidation so exposure changes are limited.
How serious is the interaction between Nefazodone 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: Monitor for agitation, tremor, clonus, hyperthermia and diarrhea, particularly after dose changes. Use the lowest effective doses.
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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