Drug interactions
Lumefantrine + Oxybutynin
Severity: Minor
Lumefantrine and Oxybutynin: 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
Lumefantrine may modestly induce CYP3A4, which could lower oxybutynin exposure. The clinical effect is expected to be small and short-lived given the brief antimalarial course.
What this interaction means in plain words
Lumefantrine and Oxybutynin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible weak CYP3A4 induction by lumefantrine increasing oxybutynin first-pass and hepatic metabolism.
What to do
No routine action is needed; if bladder symptoms worsen during the malaria treatment course, reassess oxybutynin response.
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 Oxybutynin
Frequently asked questions
Can I take Lumefantrine with Oxybutynin?
MediHelp rates the interaction as minor. Lumefantrine and Oxybutynin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Lumefantrine may modestly induce CYP3A4, which could lower oxybutynin exposure. The clinical effect is expected to be small and short-lived given the brief antimalarial course.
How serious is the interaction between Lumefantrine and Oxybutynin?
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 action is needed; if bladder symptoms worsen during the malaria treatment course, reassess oxybutynin response.
What other medicines interact with Oxybutynin?
MediHelp also lists interactions of Oxybutynin with, for example, Bethanechol, Clozapine, Potassium chloride. The full list is on the Oxybutynin page.
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