Drug interactions
Iobenguane i + Milnacipran
Severity: Major
Iobenguane i and Milnacipran: 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
Milnacipran inhibits norepinephrine reuptake and may reduce uptake of iobenguane into adrenergic tissue. This can cause a false-negative or poor-quality scan.
What this interaction means in plain words
Iobenguane i and Milnacipran 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.
Why it happens
Inhibition of the norepinephrine transporter reduces cellular uptake of iobenguane.
What to do
If feasible, stop milnacipran for about 5 half-lives before imaging, tapering as needed. Otherwise reschedule the study.
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 Milnacipran
- Isocarboxazid + Milnacipran Contraindicated
- Methylene blue + Milnacipran Contraindicated
- Milnacipran + Phenelzine Contraindicated
- Milnacipran + Procarbazine Contraindicated
- Milnacipran + Rasagiline Contraindicated
- Milnacipran + Safinamide Contraindicated
Frequently asked questions
Can I take Iobenguane i with Milnacipran?
MediHelp rates the interaction as major. Iobenguane i and Milnacipran 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. Milnacipran inhibits norepinephrine reuptake and may reduce uptake of iobenguane into adrenergic tissue. This can cause a false-negative or poor-quality scan.
How serious is the interaction between Iobenguane i and Milnacipran?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: If feasible, stop milnacipran for about 5 half-lives before imaging, tapering as needed. Otherwise reschedule the study.
What other medicines interact with Milnacipran?
MediHelp also lists interactions of Milnacipran with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Milnacipran page.
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