Drug interactions
Nortriptyline + Rimabotulinumtoxinb
Severity: Moderate
Nortriptyline and Rimabotulinumtoxinb: 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
Anticholinergic drugs may potentiate the effects of botulinum toxin. Rimabotulinumtoxin B commonly causes dry mouth, which nortriptyline can worsen, and spread of toxin may cause systemic weakness.
What this interaction means in plain words
Nortriptyline and Rimabotulinumtoxinb 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.
Nortriptyline belongs to Central Nervous System; Rimabotulinumtoxinb belongs to Musculoskeletal.
Why it happens
Additive anticholinergic and neuromuscular-blocking effects.
What to do
Monitor for dry mouth, dysphagia, generalized weakness and anticholinergic symptoms after injection. Use the lowest effective toxin dose.
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 Nortriptyline
- Disopyramide + Nortriptyline Contraindicated
- Dofetilide + Nortriptyline Contraindicated
- Dronedarone + Nortriptyline Contraindicated
- Ibutilide + Nortriptyline Contraindicated
- Isocarboxazid + Nortriptyline Contraindicated
- Methylene blue + Nortriptyline Contraindicated
Other interactions of Rimabotulinumtoxinb
- Amikacin + Rimabotulinumtoxinb Moderate
- Amitriptyline + Rimabotulinumtoxinb Moderate
- Atracurium + Rimabotulinumtoxinb Moderate
- Atropine + Rimabotulinumtoxinb Moderate
- Baclofen + Rimabotulinumtoxinb Moderate
- Benztropine + Rimabotulinumtoxinb Moderate
Frequently asked questions
Can I take Nortriptyline with Rimabotulinumtoxinb?
MediHelp rates the interaction as moderate. Nortriptyline and Rimabotulinumtoxinb 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. Anticholinergic drugs may potentiate the effects of botulinum toxin. Rimabotulinumtoxin B commonly causes dry mouth, which nortriptyline can worsen, and spread of toxin may cause systemic weakness.
How serious is the interaction between Nortriptyline and Rimabotulinumtoxinb?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for dry mouth, dysphagia, generalized weakness and anticholinergic symptoms after injection. Use the lowest effective toxin dose.
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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