Drug interactions
Cyclizine + OnabotulinumtoxinA
Severity: Minor
Cyclizine and OnabotulinumtoxinA: 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
Anticholinergic drugs such as cyclizine may add to the effects of botulinum toxin on cholinergic transmission. This could theoretically increase muscle weakness and systemic anticholinergic effects, though clinical data are limited.
What this interaction means in plain words
Cyclizine and OnabotulinumtoxinA have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Cyclizine belongs to Respiratory; OnabotulinumtoxinA belongs to Musculoskeletal.
Why it happens
Additive reduction in cholinergic signaling: presynaptic acetylcholine release blocked by the toxin and muscarinic blockade by cyclizine.
What to do
No routine change is needed; monitor for excessive weakness, dysphagia or dry mouth after injection. Review the need for other anticholinergic drugs in patients treated with larger toxin doses.
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 Cyclizine
- Calcium / magnesium / potassium / sodium oxybates + Cyclizine Major
- Cyclizine + Henbane Major
- Cyclizine + Sodium oxybate Major
- Abobotulinumtoxina + Cyclizine Moderate
- Alfentanil + Cyclizine Moderate
- Alprazolam + Cyclizine Moderate
Other interactions of OnabotulinumtoxinA
Frequently asked questions
Can I take Cyclizine with OnabotulinumtoxinA?
MediHelp rates the interaction as minor. Cyclizine and OnabotulinumtoxinA have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Anticholinergic drugs such as cyclizine may add to the effects of botulinum toxin on cholinergic transmission. This could theoretically increase muscle weakness and systemic anticholinergic effects, though clinical data are limited.
How serious is the interaction between Cyclizine and OnabotulinumtoxinA?
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 routine change is needed; monitor for excessive weakness, dysphagia or dry mouth after injection. Review the need for other anticholinergic drugs in patients treated with larger toxin doses.
What other medicines interact with Cyclizine?
MediHelp also lists interactions of Cyclizine with, for example, Calcium / magnesium / potassium / sodium oxybates, Henbane, Sodium oxybate. The full list is on the Cyclizine page.
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