Drug interactions
Belladonna and opium + Loxapine
Severity: Major
Belladonna and opium and Loxapine: major 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
The combination brings together an opioid and an antimuscarinic with loxapine, which has sedative and anticholinergic effects. This raises the risk of respiratory depression, profound sedation, constipation, urinary retention and confusion.
What this interaction means in plain words
Belladonna and opium and Loxapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive CNS and respiratory depression from opioid and antipsychotic effects, plus additive antimuscarinic effects.
What to do
Use the lowest effective doses and monitor respiratory rate, sedation and anticholinergic effects. Avoid in patients with respiratory compromise or ileus.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Loxapine
Frequently asked questions
Can I take Belladonna and opium with Loxapine?
MediHelp rates the interaction as major. Belladonna and opium and Loxapine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. The combination brings together an opioid and an antimuscarinic with loxapine, which has sedative and anticholinergic effects. This raises the risk of respiratory depression, profound sedation, constipation, urinary retention and confusion.
How serious is the interaction between Belladonna and opium and Loxapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses and monitor respiratory rate, sedation and anticholinergic effects. Avoid in patients with respiratory compromise or ileus.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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