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Drug interactions

Difelikefalin + Thioridazine

Severity: Moderate

Difelikefalin and Thioridazine: 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

Difelikefalin can cause somnolence, dizziness and confusion, and thioridazine is also sedating. Together they may increase drowsiness and the risk of falls, particularly in dialysis patients.

What this interaction means in plain words

Difelikefalin and Thioridazine 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.

Difelikefalin belongs to Dermatology; Thioridazine belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depression.

What to do

Monitor for excessive sedation and dizziness, and counsel on fall precautions. Reduce doses if somnolence occurs.

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 Difelikefalin with Thioridazine?

MediHelp rates the interaction as moderate. Difelikefalin and Thioridazine 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. Difelikefalin can cause somnolence, dizziness and confusion, and thioridazine is also sedating. Together they may increase drowsiness and the risk of falls, particularly in dialysis patients.

How serious is the interaction between Difelikefalin and Thioridazine?

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 excessive sedation and dizziness, and counsel on fall precautions. Reduce doses if somnolence occurs.

What other medicines interact with Thioridazine?

MediHelp also lists interactions of Thioridazine with, for example, Abiraterone, Adagrasib, Amiodarone. The full list is on the Thioridazine page.

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

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