Drug interactions
Dicyclomine + Trospium chloride
Severity: Moderate
Dicyclomine and Trospium chloride: 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 agents are antimuscarinics, so combined use increases anticholinergic effects including dry mouth, constipation, urinary retention, tachycardia and blurred vision. Older patients are at greater risk of confusion and heat intolerance.
What this interaction means in plain words
Dicyclomine and Trospium chloride 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 muscarinic receptor blockade.
What to do
Avoid duplicate antimuscarinic therapy where possible. If both are needed, monitor for anticholinergic toxicity and urinary retention 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 Dicyclomine
- Clozapine + Dicyclomine Major
- Dicyclomine + Henbane Major
- Dicyclomine + Imipramine Major
- Dicyclomine + Pramlintide Major
- Abobotulinumtoxina + Dicyclomine Moderate
- Aclidinium + Dicyclomine Moderate
Frequently asked questions
Can I take Dicyclomine with Trospium chloride?
MediHelp rates the interaction as moderate. Dicyclomine and Trospium chloride 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 agents are antimuscarinics, so combined use increases anticholinergic effects including dry mouth, constipation, urinary retention, tachycardia and blurred vision. Older patients are at greater risk of confusion and heat intolerance.
How serious is the interaction between Dicyclomine and Trospium chloride?
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 anticholinergic toxicity and urinary retention and use the lowest effective doses.
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.
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