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Drug interactions

Darifenacin + Dicyclomine

Severity: Moderate

Darifenacin and Dicyclomine: 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 are antimuscarinics, so combined use increases anticholinergic adverse effects such as dry mouth, constipation, blurred vision and urinary retention. Cognitive impairment is a concern in older patients.

What this interaction means in plain words

Darifenacin and Dicyclomine 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.

Darifenacin belongs to Genitourinary; Dicyclomine belongs to Respiratory.

Evidence level: Moderate

Why it happens

Additive muscarinic receptor antagonism.

What to do

Avoid duplicate antimuscarinic therapy when possible; otherwise monitor for constipation, urinary retention and cognitive effects and reduce doses as needed.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Darifenacin with Dicyclomine?

MediHelp rates the interaction as moderate. Darifenacin and Dicyclomine 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 are antimuscarinics, so combined use increases anticholinergic adverse effects such as dry mouth, constipation, blurred vision and urinary retention. Cognitive impairment is a concern in older patients.

How serious is the interaction between Darifenacin and Dicyclomine?

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 when possible; otherwise monitor for constipation, urinary retention and cognitive effects and reduce doses as needed.

What other medicines interact with Dicyclomine?

MediHelp also lists interactions of Dicyclomine with, for example, Clozapine, Henbane, Imipramine. The full list is on the Dicyclomine page.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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