Drug interactions
Buprenorphine subdermal implant + Memantine-donepezil
Severity: Moderate
Buprenorphine subdermal implant and Memantine-donepezil: 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
Buprenorphine can prolong the QT interval modestly, and donepezil also has this effect. Combined use may add to arrhythmia risk in susceptible patients.
What this interaction means in plain words
Buprenorphine subdermal implant and Memantine-donepezil 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.
Why it happens
Additive QT prolongation.
What to do
Obtain a baseline ECG in patients with cardiac risk factors and monitor QTc. Correct electrolyte abnormalities.
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?
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Other interactions of Memantine-donepezil
- Dronedarone + Memantine-donepezil Contraindicated
- Memantine-donepezil + Thioridazine Contraindicated
- Amantadine + Memantine-donepezil Major
- Amiodarone + Memantine-donepezil Major
- Amisulpride + Memantine-donepezil Major
- Amitriptyline + Memantine-donepezil Major
Frequently asked questions
Can I take Buprenorphine subdermal implant with Memantine-donepezil?
MediHelp rates the interaction as moderate. Buprenorphine subdermal implant and Memantine-donepezil 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. Buprenorphine can prolong the QT interval modestly, and donepezil also has this effect. Combined use may add to arrhythmia risk in susceptible patients.
How serious is the interaction between Buprenorphine subdermal implant and Memantine-donepezil?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG in patients with cardiac risk factors and monitor QTc. Correct electrolyte abnormalities.
What other medicines interact with Memantine-donepezil?
MediHelp also lists interactions of Memantine-donepezil with, for example, Dronedarone, Thioridazine, Amantadine. The full list is on the Memantine-donepezil page.
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