Drug interactions
Cevimeline + Metronidazole
Severity: Minor
Cevimeline and Metronidazole: 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
Cevimeline is metabolized by CYP2D6 and CYP3A4, and inhibitors of these enzymes may increase its cholinergic effects. Metronidazole is a weak CYP3A4 inhibitor at most, so any effect is likely small.
What this interaction means in plain words
Cevimeline and Metronidazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Cevimeline belongs to Miscellaneous; Metronidazole belongs to Anti Parasitic.
Why it happens
Possible weak inhibition of CYP3A4-mediated cevimeline metabolism.
What to do
No dose change is needed; monitor for excessive sweating, nausea, diarrhea or bradycardia.
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 Metronidazole
- Ethanol + Metronidazole Contraindicated
- Metronidazole + Pimozide Contraindicated
- Amiodarone + Metronidazole Major
- Disulfiram + Metronidazole Major
- Ergotamine + Metronidazole Major
- Lomitapide + Metronidazole Major
Other interactions of Cevimeline
- Amitriptyline + Cevimeline Moderate
- Atenolol-chlorthalidone + Cevimeline Moderate
- Atenolol + Cevimeline Moderate
- Atropine + Cevimeline Moderate
- Betaxolol + Cevimeline Moderate
- Bethanechol + Cevimeline Moderate
Frequently asked questions
Can I take Cevimeline with Metronidazole?
MediHelp rates the interaction as minor. Cevimeline and Metronidazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cevimeline is metabolized by CYP2D6 and CYP3A4, and inhibitors of these enzymes may increase its cholinergic effects. Metronidazole is a weak CYP3A4 inhibitor at most, so any effect is likely small.
How serious is the interaction between Cevimeline and Metronidazole?
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 dose change is needed; monitor for excessive sweating, nausea, diarrhea or bradycardia.
What other medicines interact with Metronidazole?
MediHelp also lists interactions of Metronidazole with, for example, Ethanol, Pimozide, Amiodarone. The full list is on the Metronidazole page.
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