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Drug interactions

Indinavir + Omeprazole

Severity: Moderate

Indinavir and Omeprazole: 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

Indinavir absorption depends on gastric acidity, and omeprazole can lower its plasma concentrations. This may compromise HIV suppression.

What this interaction means in plain words

Indinavir and Omeprazole 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.

Evidence level: Moderate

Why it happens

Increased gastric pH reduces indinavir solubility and absorption.

What to do

Prefer an alternative to the PPI, or monitor viral load and consider a boosted indinavir regimen.

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 Indinavir with Omeprazole?

MediHelp rates the interaction as moderate. Indinavir and Omeprazole 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. Indinavir absorption depends on gastric acidity, and omeprazole can lower its plasma concentrations. This may compromise HIV suppression.

How serious is the interaction between Indinavir and Omeprazole?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer an alternative to the PPI, or monitor viral load and consider a boosted indinavir regimen.

What other medicines interact with Omeprazole?

MediHelp also lists interactions of Omeprazole with, for example, Mavacamten, Rilpivirine, Acalabrutinib. The full list is on the Omeprazole page.

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