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    HomeMedication GuideDrug InteractionsDigoxin + Ketoconazole
    Minor interaction

    Does Digoxin Interact With Ketoconazole?

    Conivaptan 33% 43% Diltiazem 20% NA Indomethacin 40% NA Mirabegron 29% 27% Nefazodone 27% 15% Nifedipine 45% NA Propantheline 24% 24% Quinine NA 33% Rabeprazole 29% 19% Saquinavir 27% 49% Spironolactone 25% NA Telmisartan 20 to 49% NA Tricagrelor 31% 28% Tolvaptan 30% 20% Trimethoprim 22 to 28% NA Digoxin concentrations increased, but magnitude is unclear Alprazolam, azithromycin, cyclosporine, diclofenac, diphenoxylate, epoprostenol, esomeprazole, ibuprofen, ketoconazole, lansoprazole, metfo…

    Reviewed by the OmniRx Health clinical teamLast reviewed Jul 4, 2026

    Severity: Minor

    Severity basis: drug interactions section. Combining Digoxin (Cardiac glycoside) and Ketoconazole (Azole antifungal (strong CYP3A4 inhibitor)) is classified as a minor interaction.

    What to Do

    This is generally a minor interaction, but review it with your pharmacist to be sure it is safe for you.

    How This Interaction Works

    Interactions like this one can happen when two medicines have overlapping effects, or when one changes how the other is absorbed, broken down, or cleared from the body. Digoxin is a cardiac glycoside and Ketoconazole is a azole antifungal (strong cyp3a4 inhibitor); together they are documented as a minor interaction. How much this matters depends on your dose, your other medications, and your overall health.

    If You Take Both Medications

    If you have been prescribed both Digoxin and Ketoconazole, do not start, stop, or change either medication on your own — some medicines are unsafe to stop suddenly. Tell your prescriber and pharmacist that you take both so they can decide whether the combination is right for you, adjust the dose, monitor you more closely, or suggest an alternative.

    From the FDA Label

    Conivaptan 33% 43% Diltiazem 20% NA Indomethacin 40% NA Mirabegron 29% 27% Nefazodone 27% 15% Nifedipine 45% NA Propantheline 24% 24% Quinine NA 33% Rabeprazole 29% 19% Saquinavir 27% 49% Spironolactone 25% NA Telmisartan 20 to 49% NA Tricagrelor 31% 28% Tolvaptan 30% 20% Trimethoprim 22 to 28% NA Digoxin concentrations increased, but magnitude is unclear Alprazolam, azithromycin, cyclosporine, diclofenac, diphenoxylate, epoprostenol, esomeprazole, ibuprofen, ketoconazole, lansoprazole, metfo…

    Source: FDA structured product labeling (set_id 03612934-62f4-4002-85af-6c66cd172acb).

    Digoxin

    Cardiac glycoside

    Brands: Lanoxin

    View Digoxin safety profile

    Ketoconazole

    Azole antifungal (strong CYP3A4 inhibitor)

    Brands: Nizoral

    View Ketoconazole safety profile

    Check these against your full medication list in our free Interaction Checker

    Frequently Asked Questions

    Can you take Digoxin and Ketoconazole together?

    Digoxin and Ketoconazole have a documented minor interaction. This is generally a minor interaction, but review it with your pharmacist to be sure it is safe for you.

    How serious is the Digoxin and Ketoconazole interaction?

    It is classified as a minor interaction, based on the FDA label's drug interactions section. A minor interaction is usually limited in effect but is still worth discussing with your care team.

    What should I do if I'm taking both Digoxin and Ketoconazole?

    If you have been prescribed both Digoxin and Ketoconazole, do not start, stop, or change either medication on your own — some medicines are unsafe to stop suddenly. Tell your prescriber and pharmacist that you take both so they can decide whether the combination is right for you, adjust the dose, monitor you more closely, or suggest an alternative.

    This information is educational — not medical advice.

    This page is provided for general educational purposes and summarizes publicly available data from sources such as the U.S. Food & Drug Administration. It is not a substitute for the judgment of a licensed clinician and should not be used to start, stop, or change any medication. It may be incomplete or out of date, and individual circumstances vary. Always talk with your prescriber or pharmacist about your specific medications and health conditions. If you think you may have a medical emergency, call 911.

    Questions About Your Medications?

    A licensed OmniRx provider can review your full medication list and help you understand what's safe for you — no office visit required.

    Other Digoxin Interactions

    Other Ketoconazole Interactions