Drug interactions
Atropine + OnabotulinumtoxinA
Severity: Moderate
Atropine and OnabotulinumtoxinA: 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 add to the effects of botulinum toxin. This could increase generalized weakness or systemic anticholinergic effects after injection, though clinical evidence is limited.
What this interaction means in plain words
Atropine and OnabotulinumtoxinA 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.
Atropine belongs to Miscellaneous; OnabotulinumtoxinA belongs to Musculoskeletal.
Why it happens
Additive anticholinergic effect: botulinum toxin blocks acetylcholine release while atropine blocks muscarinic receptors.
What to do
Monitor for excessive muscle weakness, swallowing or breathing difficulty and anticholinergic symptoms after injection. Use the lowest effective doses.
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 Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Other interactions of OnabotulinumtoxinA
Frequently asked questions
Can I take Atropine with OnabotulinumtoxinA?
MediHelp rates the interaction as moderate. Atropine and OnabotulinumtoxinA 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 add to the effects of botulinum toxin. This could increase generalized weakness or systemic anticholinergic effects after injection, though clinical evidence is limited.
How serious is the interaction between Atropine and OnabotulinumtoxinA?
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 excessive muscle weakness, swallowing or breathing difficulty and anticholinergic symptoms after injection. Use the lowest effective doses.
What other medicines interact with Atropine?
MediHelp also lists interactions of Atropine with, for example, Eluxadoline, Henbane, Pramlintide. The full list is on the Atropine page.
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