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Drug interactions

Carbidopa-entacapone-levodopa + Dicyclomine

Severity: Moderate

Carbidopa-entacapone-levodopa 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

Dicyclomine is an anticholinergic that can add to confusion, hallucinations and dyskinesia in patients taking levodopa. It slows gastric emptying and may delay levodopa absorption, reducing its effect.

What this interaction means in plain words

Carbidopa-entacapone-levodopa 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.

Carbidopa-entacapone-levodopa belongs to Central Nervous System; Dicyclomine belongs to Respiratory.

Evidence level: Low

Why it happens

Additive anticholinergic effects with delayed gastric emptying reducing levodopa absorption.

What to do

Monitor for cognitive effects and changes in motor response, especially in older adults. Use the lowest effective dicyclomine dose or choose a non-anticholinergic option.

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 Carbidopa-entacapone-levodopa with Dicyclomine?

MediHelp rates the interaction as moderate. Carbidopa-entacapone-levodopa 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. Dicyclomine is an anticholinergic that can add to confusion, hallucinations and dyskinesia in patients taking levodopa. It slows gastric emptying and may delay levodopa absorption, reducing its effect.

How serious is the interaction between Carbidopa-entacapone-levodopa 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: Monitor for cognitive effects and changes in motor response, especially in older adults. Use the lowest effective dicyclomine dose or choose a non-anticholinergic option.

What other medicines interact with Carbidopa-entacapone-levodopa?

MediHelp also lists interactions of Carbidopa-entacapone-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-entacapone-levodopa page.

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