Drug interactions
Flavoxate + Methscopolamine
Severity: Moderate
Flavoxate and Methscopolamine: 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
Both drugs block muscarinic receptors. Taken together they increase the risk of dry mouth, constipation, urinary retention, blurred vision and tachycardia.
What this interaction means in plain words
Flavoxate and Methscopolamine 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.
Why it happens
Additive antimuscarinic pharmacodynamic effects.
What to do
Avoid duplicate antimuscarinic therapy where possible. If both are needed, monitor for urinary retention, constipation and heat intolerance and use the lowest effective doses.
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
Frequently asked questions
Can I take Flavoxate with Methscopolamine?
MediHelp rates the interaction as moderate. Flavoxate and Methscopolamine 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. Both drugs block muscarinic receptors. Taken together they increase the risk of dry mouth, constipation, urinary retention, blurred vision and tachycardia.
How serious is the interaction between Flavoxate and Methscopolamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid duplicate antimuscarinic therapy where possible. If both are needed, monitor for urinary retention, constipation and heat intolerance and use the lowest effective doses.
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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