Drug interactions
Aprepitant + Elacestrant
Severity: Major
Aprepitant and Elacestrant: 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
Aprepitant, a moderate CYP3A4 inhibitor, can raise elacestrant exposure. Higher levels may increase elacestrant adverse effects including nausea, dyslipidemia and musculoskeletal pain.
What this interaction means in plain words
Aprepitant and Elacestrant 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.
Aprepitant belongs to Gastrointestinal Tract; Elacestrant belongs to Oncology.
Why it happens
Aprepitant inhibits CYP3A4, the main pathway of elacestrant metabolism.
What to do
Avoid concomitant use of elacestrant with moderate CYP3A4 inhibitors as labeled, and choose an antiemetic without CYP3A4 inhibition such as a 5-HT3 antagonist. If unavoidable, monitor for adverse effects.
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?
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Other interactions of Aprepitant
- Aprepitant + Lomitapide Contraindicated
- Aprepitant + Pimozide Contraindicated
- Aprepitant + Avapritinib Major
- Aprepitant + Bosutinib Major
- Aprepitant + Carbamazepine Major
- Aprepitant + Cobicistat Major
Other interactions of Elacestrant
Frequently asked questions
Can I take Aprepitant with Elacestrant?
MediHelp rates the interaction as major. Aprepitant and Elacestrant 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. Aprepitant, a moderate CYP3A4 inhibitor, can raise elacestrant exposure. Higher levels may increase elacestrant adverse effects including nausea, dyslipidemia and musculoskeletal pain.
How serious is the interaction between Aprepitant and Elacestrant?
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 concomitant use of elacestrant with moderate CYP3A4 inhibitors as labeled, and choose an antiemetic without CYP3A4 inhibition such as a 5-HT3 antagonist. If unavoidable, monitor for adverse effects.
What other medicines interact with Aprepitant?
MediHelp also lists interactions of Aprepitant with, for example, Lomitapide, Pimozide, Avapritinib. The full list is on the Aprepitant page.
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