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Drug interactions

Degarelix + Haloperidol

Severity: Moderate

Degarelix and Haloperidol: 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

Androgen deprivation therapy such as degarelix can prolong the QT interval, and haloperidol has a recognized QT-prolonging effect. Combined use may raise the risk of torsades de pointes, especially with electrolyte disturbance or heart disease.

What this interaction means in plain words

Degarelix and Haloperidol 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.

Degarelix belongs to Endocrine; Haloperidol belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive effects on cardiac repolarization.

What to do

Obtain a baseline ECG, correct potassium and magnesium, and monitor QTc periodically. Use the lowest effective haloperidol dose or an alternative antipsychotic if QTc is prolonged.

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 Degarelix with Haloperidol?

MediHelp rates the interaction as moderate. Degarelix and Haloperidol 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. Androgen deprivation therapy such as degarelix can prolong the QT interval, and haloperidol has a recognized QT-prolonging effect. Combined use may raise the risk of torsades de pointes, especially with electrolyte disturbance or heart disease.

How serious is the interaction between Degarelix and Haloperidol?

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, correct potassium and magnesium, and monitor QTc periodically. Use the lowest effective haloperidol dose or an alternative antipsychotic if QTc is prolonged.

What other medicines interact with Haloperidol?

MediHelp also lists interactions of Haloperidol with, for example, Dofetilide, Dronedarone, Ibutilide. The full list is on the Haloperidol page.

Full monographs, dosing and an interaction checker in the MediHelp app

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