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    HomeMedication GuideDrug InteractionsCarbamazepine + Tacrolimus
    Moderate interaction

    Does Carbamazepine Interact With Tacrolimus?

    When carbamazepine is used with tacrolimus, monitoring of tacrolimus blood concentrations and appropriate dosage adjustments are recommended.

    Reviewed by the OmniRx Health clinical team•Last reviewed Jul 4, 2026

    Severity: Moderate

    Severity basis: drug interactions section (keywords: monitor, dosage adjustment). Combining Carbamazepine (Anticonvulsant) and Tacrolimus (Calcineurin inhibitor immunosuppressant) is classified as a moderate interaction.

    What to Do

    Use this combination with caution. Your prescriber may monitor you more closely or adjust doses.

    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. Carbamazepine is a anticonvulsant and Tacrolimus is a calcineurin inhibitor immunosuppressant; together they are documented as a moderate 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 Carbamazepine and Tacrolimus, 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

    When carbamazepine is used with tacrolimus, monitoring of tacrolimus blood concentrations and appropriate dosage adjustments are recommended.

    Source: FDA structured product labeling (set_id 047bc284-060a-4db9-bf37-75d10f95a0a6).

    Carbamazepine

    Anticonvulsant

    Brands: Tegretol, Carbatrol

    View Carbamazepine safety profile

    Tacrolimus

    Calcineurin inhibitor immunosuppressant

    Brands: Prograf, Astagraf XL

    View Tacrolimus safety profile

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

    Frequently Asked Questions

    Can you take Carbamazepine and Tacrolimus together?

    Carbamazepine and Tacrolimus have a documented moderate interaction. Use this combination with caution. Your prescriber may monitor you more closely or adjust doses.

    How serious is the Carbamazepine and Tacrolimus interaction?

    It is classified as a moderate interaction, based on the FDA label's drug interactions section (keywords: monitor, dosage adjustment). A moderate interaction can be clinically meaningful and usually calls for monitoring or a dose adjustment.

    What should I do if I'm taking both Carbamazepine and Tacrolimus?

    If you have been prescribed both Carbamazepine and Tacrolimus, 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 Carbamazepine Interactions

    Sources & References

    Learn more about where our data comes from and how we write and review medical content.