Drug interactions
Buprenorphine transdermal + Nortriptyline
Severity: Major
Buprenorphine transdermal 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
Transdermal buprenorphine can prolong the QTc interval and cause sedation, and nortriptyline has the same effects. The combination increases the risk of arrhythmia and CNS or respiratory depression.
What this interaction means in plain words
Buprenorphine transdermal 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 the lowest effective doses and monitor for sedation and respiratory depression. Obtain an ECG in patients with cardiac risk factors and correct electrolyte abnormalities.
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 transdermal with Nortriptyline?
MediHelp rates the interaction as major. Buprenorphine transdermal 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. Transdermal buprenorphine can prolong the QTc interval and cause sedation, and nortriptyline has the same effects. The combination increases the risk of arrhythmia and CNS or respiratory depression.
How serious is the interaction between Buprenorphine transdermal 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 the lowest effective doses and monitor for sedation and respiratory depression. Obtain an ECG in patients with cardiac risk factors and correct electrolyte abnormalities.
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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