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Drug interactions

Buprenorphine subdermal implant + Tacrolimus

Severity: Moderate

Buprenorphine subdermal implant 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

Tacrolimus and buprenorphine can each prolong the QT interval, so combining them may add to arrhythmia risk. Buprenorphine from the implant is at a low, steady exposure, which limits the practical concern.

What this interaction means in plain words

Buprenorphine subdermal implant 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

Additive pharmacodynamic QT prolongation through effects on cardiac repolarization.

What to do

Check a baseline ECG and keep potassium and magnesium in the normal range. Monitor the QTc, especially if other QT-prolonging drugs are added.

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 Buprenorphine subdermal implant with Tacrolimus?

MediHelp rates the interaction as moderate. Buprenorphine subdermal implant 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. Tacrolimus and buprenorphine can each prolong the QT interval, so combining them may add to arrhythmia risk. Buprenorphine from the implant is at a low, steady exposure, which limits the practical concern.

How serious is the interaction between Buprenorphine subdermal implant 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: Check a baseline ECG and keep potassium and magnesium in the normal range. Monitor the QTc, especially if other QT-prolonging drugs are added.

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.

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