Drug interactions
OnabotulinumtoxinA + Quetiapine
Severity: Minor
OnabotulinumtoxinA and Quetiapine: minor 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
Quetiapine has anticholinergic activity that could theoretically add to the effects of botulinum toxin. Excess neuromuscular weakness is unlikely at usual doses.
What this interaction means in plain words
OnabotulinumtoxinA and Quetiapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
OnabotulinumtoxinA belongs to Musculoskeletal; Quetiapine belongs to Central Nervous System.
Why it happens
Theoretical additive effects on cholinergic neuromuscular transmission.
What to do
No dose change is needed; watch for unusual generalized weakness, swallowing or breathing difficulty after injection.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Other interactions of OnabotulinumtoxinA
Frequently asked questions
Can I take OnabotulinumtoxinA with Quetiapine?
MediHelp rates the interaction as minor. OnabotulinumtoxinA and Quetiapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Quetiapine has anticholinergic activity that could theoretically add to the effects of botulinum toxin. Excess neuromuscular weakness is unlikely at usual doses.
How serious is the interaction between OnabotulinumtoxinA and Quetiapine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is needed; watch for unusual generalized weakness, swallowing or breathing difficulty after injection.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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