Drug interactions
Dicyclomine + OnabotulinumtoxinA
Severity: Moderate
Dicyclomine 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
Botulinum toxin blocks acetylcholine release at the neuromuscular junction, and anticholinergic drugs may add to systemic cholinergic blockade. This could increase the risk of generalized weakness or autonomic side effects, particularly if toxin spreads systemically.
What this interaction means in plain words
Dicyclomine 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.
Dicyclomine belongs to Respiratory; OnabotulinumtoxinA belongs to Musculoskeletal.
Why it happens
Additive inhibition of cholinergic transmission, presynaptic with the toxin and postsynaptic muscarinic with dicyclomine.
What to do
Monitor for excessive muscle weakness, swallowing or breathing difficulty and anticholinergic effects after injection. Review the need for dicyclomine around treatment.
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 Dicyclomine
- Clozapine + Dicyclomine Major
- Dicyclomine + Henbane Major
- Dicyclomine + Imipramine Major
- Dicyclomine + Pramlintide Major
- Abobotulinumtoxina + Dicyclomine Moderate
- Aclidinium + Dicyclomine Moderate
Other interactions of OnabotulinumtoxinA
Frequently asked questions
Can I take Dicyclomine with OnabotulinumtoxinA?
MediHelp rates the interaction as moderate. Dicyclomine 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. Botulinum toxin blocks acetylcholine release at the neuromuscular junction, and anticholinergic drugs may add to systemic cholinergic blockade. This could increase the risk of generalized weakness or autonomic side effects, particularly if toxin spreads systemically.
How serious is the interaction between Dicyclomine 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 effects after injection. Review the need for dicyclomine around treatment.
What other medicines interact with Dicyclomine?
MediHelp also lists interactions of Dicyclomine with, for example, Clozapine, Henbane, Imipramine. The full list is on the Dicyclomine page.
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