Drug interactions
Buprenorphine + Memantine-donepezil
Severity: Moderate
Buprenorphine 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
Donepezil can prolong the QT interval and cause bradycardia, and buprenorphine has been associated with QT prolongation, particularly at higher doses or with transdermal and parenteral forms. Together they may raise the risk of torsades de pointes, especially in patients with other risk factors.
What this interaction means in plain words
Buprenorphine 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 belongs to Musculoskeletal; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic QT prolongation, with donepezil adding cholinergic bradycardia.
What to do
Obtain a baseline ECG in patients with cardiac risk factors and correct potassium and magnesium. Use the lowest effective buprenorphine dose and reassess if syncope, palpitations or QTc prolongation occurs.
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
Other interactions of Buprenorphine
- Alvimopan + Buprenorphine Contraindicated
- Buprenorphine + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Buprenorphine + Olanzapine / samidorphan Contraindicated
- Buprenorphine + Phenelzine Contraindicated
- Buprenorphine + Pimozide Contraindicated
- Buprenorphine + Thioridazine Contraindicated
Frequently asked questions
Can I take Buprenorphine with Memantine-donepezil?
MediHelp rates the interaction as moderate. Buprenorphine 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. Donepezil can prolong the QT interval and cause bradycardia, and buprenorphine has been associated with QT prolongation, particularly at higher doses or with transdermal and parenteral forms. Together they may raise the risk of torsades de pointes, especially in patients with other risk factors.
How serious is the interaction between Buprenorphine 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 correct potassium and magnesium. Use the lowest effective buprenorphine dose and reassess if syncope, palpitations or QTc prolongation occurs.
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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