Drug interactions
Carbachol + Flavoxate
Severity: Moderate
Carbachol and Flavoxate: 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
Carbachol is a cholinergic agonist and flavoxate has antimuscarinic effects, so each may reduce the effect of the other. The clinical result is unpredictable and depends on dose and route.
What this interaction means in plain words
Carbachol and Flavoxate 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.
Carbachol belongs to Miscellaneous; Flavoxate belongs to Genitourinary.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
Monitor for loss of the intended effect of carbachol, such as reduced intraocular pressure control or bladder stimulation. Adjust therapy if efficacy is lost.
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 Flavoxate
- Clozapine + Flavoxate Major
- Abobotulinumtoxina + Flavoxate Moderate
- Aclidinium + Flavoxate Moderate
- Amantadine + Flavoxate Moderate
- Amitriptyline + Flavoxate Moderate
- Amoxapine + Flavoxate Moderate
Other interactions of Carbachol
- Atropine + Carbachol Moderate
- Bethanechol + Carbachol Moderate
- Carbachol + Darifenacin Moderate
- Carbachol + Dicyclomine Moderate
- Carbachol + Donepezil Moderate
- Carbachol + Galantamine Moderate
Frequently asked questions
Can I take Carbachol with Flavoxate?
MediHelp rates the interaction as moderate. Carbachol and Flavoxate 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. Carbachol is a cholinergic agonist and flavoxate has antimuscarinic effects, so each may reduce the effect of the other. The clinical result is unpredictable and depends on dose and route.
How serious is the interaction between Carbachol and Flavoxate?
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 loss of the intended effect of carbachol, such as reduced intraocular pressure control or bladder stimulation. Adjust therapy if efficacy is lost.
What other medicines interact with Flavoxate?
MediHelp also lists interactions of Flavoxate with, for example, Clozapine, Abobotulinumtoxina, Aclidinium. The full list is on the Flavoxate page.
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