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Drug interactions

Pexidartinib + Simvastatin

Severity: Moderate

Pexidartinib and Simvastatin: 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

Pexidartinib carries a boxed warning for serious and potentially fatal liver injury, and simvastatin can also raise liver enzymes. Combining them may add to the hepatic burden. Pexidartinib may also lower simvastatin exposure through weak CYP3A induction.

What this interaction means in plain words

Pexidartinib and Simvastatin 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.

Pexidartinib belongs to Oncology; Simvastatin belongs to Cardiovascular.

Evidence level: Low

Why it happens

Additive hepatotoxic potential, with possible weak CYP3A4 induction by pexidartinib lowering simvastatin exposure.

What to do

Monitor liver enzymes closely at baseline and regularly during combined therapy, and stop one agent if transaminases or bilirubin rise significantly. Check lipid response, as simvastatin efficacy may be reduced.

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 Pexidartinib with Simvastatin?

MediHelp rates the interaction as moderate. Pexidartinib and Simvastatin 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. Pexidartinib carries a boxed warning for serious and potentially fatal liver injury, and simvastatin can also raise liver enzymes. Combining them may add to the hepatic burden. Pexidartinib may also lower simvastatin exposure through weak CYP3A induction.

How serious is the interaction between Pexidartinib and Simvastatin?

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 liver enzymes closely at baseline and regularly during combined therapy, and stop one agent if transaminases or bilirubin rise significantly. Check lipid response, as simvastatin efficacy may be reduced.

What other medicines interact with Simvastatin?

MediHelp also lists interactions of Simvastatin with, for example, Atazanavir, Clarithromycin, Cobicistat. The full list is on the Simvastatin page.

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