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Drug interactions

Enoximone + Milrinone

Severity: Major

Enoximone and Milrinone: 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 are phosphodiesterase-3 inhibitors with inotropic and vasodilating actions. Combining them duplicates therapy and increases the risk of hypotension and ventricular arrhythmias without a clear benefit.

What this interaction means in plain words

Enoximone and Milrinone 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.

Evidence level: Moderate

Why it happens

Duplicate PDE-3 inhibition causing additive increases in cAMP, inotropy and vasodilation.

What to do

Avoid concurrent use of two PDE-3 inhibitors; choose a single agent. If switching, stop the first drug and allow for its effect to wane before starting the other, with blood pressure and ECG monitoring.

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?

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 Enoximone with Milrinone?

MediHelp rates the interaction as major. Enoximone and Milrinone 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 are phosphodiesterase-3 inhibitors with inotropic and vasodilating actions. Combining them duplicates therapy and increases the risk of hypotension and ventricular arrhythmias without a clear benefit.

How serious is the interaction between Enoximone and Milrinone?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use of two PDE-3 inhibitors; choose a single agent. If switching, stop the first drug and allow for its effect to wane before starting the other, with blood pressure and ECG monitoring.

What other medicines interact with Milrinone?

MediHelp also lists interactions of Milrinone with, for example, Anagrelide, Cilostazol, Inamrinone. The full list is on the Milrinone page.

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