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Drug interactions

Anagrelide + Fluoxetine

Severity: Moderate

Anagrelide and Fluoxetine: 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

Anagrelide can cause QT prolongation, tachycardia and palpitations, and fluoxetine may add to the QT effect. Fluoxetine also weakly inhibits CYP1A2, the main enzyme metabolizing anagrelide, which could raise anagrelide exposure.

What this interaction means in plain words

Anagrelide and Fluoxetine 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.

Anagrelide belongs to Cardiovascular; Fluoxetine belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive QT prolongation with possible reduced anagrelide clearance via CYP1A2 inhibition.

What to do

Obtain a baseline ECG and monitor QTc and heart rate when combining. Correct electrolyte abnormalities and reduce the anagrelide dose if cardiac adverse effects emerge.

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 Anagrelide with Fluoxetine?

MediHelp rates the interaction as moderate. Anagrelide and Fluoxetine 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. Anagrelide can cause QT prolongation, tachycardia and palpitations, and fluoxetine may add to the QT effect. Fluoxetine also weakly inhibits CYP1A2, the main enzyme metabolizing anagrelide, which could raise anagrelide exposure.

How serious is the interaction between Anagrelide and Fluoxetine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and monitor QTc and heart rate when combining. Correct electrolyte abnormalities and reduce the anagrelide dose if cardiac adverse effects emerge.

What other medicines interact with Fluoxetine?

MediHelp also lists interactions of Fluoxetine with, for example, Isocarboxazid, Mavacamten, Methylene blue. The full list is on the Fluoxetine page.

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