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Drug interactions

Levomilnacipran + Netupitant-palonosetron

Severity: Moderate

Levomilnacipran and Netupitant-palonosetron: 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

Palonosetron, a 5-HT3 antagonist, has been associated with rare reports of serotonin syndrome when given with serotonergic antidepressants such as levomilnacipran. Features can include agitation, tremor, hyperreflexia, sweating, fever and autonomic instability. The risk is low in absolute terms but the outcome can be serious.

What this interaction means in plain words

Levomilnacipran and Netupitant-palonosetron 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.

Levomilnacipran belongs to Central Nervous System; Netupitant-palonosetron belongs to Gastrointestinal Tract.

Evidence level: Low

Why it happens

Additive serotonergic effects, although the contribution of 5-HT3 antagonism to serotonin syndrome is not well established.

What to do

Monitor for signs of serotonin syndrome, especially after starting or increasing doses. Stop the serotonergic agents and give supportive care if symptoms appear.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Levomilnacipran with Netupitant-palonosetron?

MediHelp rates the interaction as moderate. Levomilnacipran and Netupitant-palonosetron 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. Palonosetron, a 5-HT3 antagonist, has been associated with rare reports of serotonin syndrome when given with serotonergic antidepressants such as levomilnacipran. Features can include agitation, tremor, hyperreflexia, sweating, fever and autonomic instability. The risk is low in absolute terms but the outcome can be serious.

How serious is the interaction between Levomilnacipran and Netupitant-palonosetron?

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 signs of serotonin syndrome, especially after starting or increasing doses. Stop the serotonergic agents and give supportive care if symptoms appear.

What other medicines interact with Netupitant-palonosetron?

MediHelp also lists interactions of Netupitant-palonosetron with, for example, Apomorphine, Flibanserin, Apalutamide. The full list is on the Netupitant-palonosetron page.

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