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Drug interactions

Elvitegravir / cobicistat / emtricitabine / tenofovir df + Eplerenone

Severity: Contraindicated

Elvitegravir / cobicistat / emtricitabine / tenofovir df and Eplerenone: contraindicated 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

The cobicistat component strongly inhibits CYP3A4 and raises eplerenone levels. This increases the risk of serious hyperkalemia.

What this interaction means in plain words

Elvitegravir / cobicistat / emtricitabine / tenofovir df and Eplerenone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Evidence level: High

Why it happens

Cobicistat inhibits CYP3A4-mediated eplerenone metabolism.

What to do

Avoid concurrent use; choose an alternative antihypertensive or heart failure therapy, or a non-boosted antiretroviral regimen.

What to ask your pharmacist

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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 Elvitegravir / cobicistat / emtricitabine / tenofovir df with Eplerenone?

MediHelp rates the interaction as contraindicated. Elvitegravir / cobicistat / emtricitabine / tenofovir df and Eplerenone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. The cobicistat component strongly inhibits CYP3A4 and raises eplerenone levels. This increases the risk of serious hyperkalemia.

How serious is the interaction between Elvitegravir / cobicistat / emtricitabine / tenofovir df and Eplerenone?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use; choose an alternative antihypertensive or heart failure therapy, or a non-boosted antiretroviral regimen.

What other medicines interact with Eplerenone?

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

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