Drug interactions
Buprenorphine buccal + Nortriptyline
Severity: Major
Buprenorphine buccal and Nortriptyline: major 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
Buccal buprenorphine can prolong the QTc interval at higher doses, and nortriptyline has similar effects. Both agents are also sedating, which adds to CNS and respiratory depression.
What this interaction means in plain words
Buprenorphine buccal and Nortriptyline can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive QT prolongation and additive CNS depression.
What to do
Use only when alternatives are inadequate, with the lowest effective doses. Check an ECG at baseline in patients with cardiac risk factors and monitor for sedation.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Nortriptyline
- Disopyramide + Nortriptyline Contraindicated
- Dofetilide + Nortriptyline Contraindicated
- Dronedarone + Nortriptyline Contraindicated
- Ibutilide + Nortriptyline Contraindicated
- Isocarboxazid + Nortriptyline Contraindicated
- Methylene blue + Nortriptyline Contraindicated
Frequently asked questions
Can I take Buprenorphine buccal with Nortriptyline?
MediHelp rates the interaction as major. Buprenorphine buccal and Nortriptyline can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Buccal buprenorphine can prolong the QTc interval at higher doses, and nortriptyline has similar effects. Both agents are also sedating, which adds to CNS and respiratory depression.
How serious is the interaction between Buprenorphine buccal and Nortriptyline?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use only when alternatives are inadequate, with the lowest effective doses. Check an ECG at baseline in patients with cardiac risk factors and monitor for sedation.
What other medicines interact with Nortriptyline?
MediHelp also lists interactions of Nortriptyline with, for example, Disopyramide, Dofetilide, Dronedarone. The full list is on the Nortriptyline page.
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