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Drug interactions

Oxymetholone + Tacrolimus

Severity: Moderate

Oxymetholone and Tacrolimus: 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

Oxymetholone may increase tacrolimus concentrations, raising the risk of nephrotoxicity and other adverse effects. Oxymetholone is itself hepatotoxic and may add to organ stress.

What this interaction means in plain words

Oxymetholone and Tacrolimus 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: Low

Why it happens

Possible reduction of tacrolimus metabolism; the mechanism is not firmly established.

What to do

Monitor tacrolimus trough levels, renal function and liver tests, and adjust the tacrolimus dose as needed.

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 Oxymetholone with Tacrolimus?

MediHelp rates the interaction as moderate. Oxymetholone and Tacrolimus 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. Oxymetholone may increase tacrolimus concentrations, raising the risk of nephrotoxicity and other adverse effects. Oxymetholone is itself hepatotoxic and may add to organ stress.

How serious is the interaction between Oxymetholone and Tacrolimus?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor tacrolimus trough levels, renal function and liver tests, and adjust the tacrolimus dose as needed.

What other medicines interact with Tacrolimus?

MediHelp also lists interactions of Tacrolimus with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Cidofovir. The full list is on the Tacrolimus page.

Full monographs, dosing and an interaction checker in the MediHelp app

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