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Drug interactions

Cholic acid + Colesevelam

Severity: Moderate

Cholic acid and Colesevelam: 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

Bile acid sequestrants bind bile acids in the gut and can reduce absorption of cholic acid, weakening its therapeutic effect in bile acid synthesis disorders.

What this interaction means in plain words

Cholic acid and Colesevelam 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.

Cholic acid belongs to Gastrointestinal Tract; Colesevelam belongs to Endocrine.

Evidence level: Moderate

Why it happens

Colesevelam binds cholic acid in the gastrointestinal lumen, reducing absorption.

What to do

Take cholic acid at least 1 hour before or 4 to 6 hours after colesevelam, and monitor liver biochemistry and clinical response.

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 Cholic acid with Colesevelam?

MediHelp rates the interaction as moderate. Cholic acid and Colesevelam 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. Bile acid sequestrants bind bile acids in the gut and can reduce absorption of cholic acid, weakening its therapeutic effect in bile acid synthesis disorders.

How serious is the interaction between Cholic acid and Colesevelam?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take cholic acid at least 1 hour before or 4 to 6 hours after colesevelam, and monitor liver biochemistry and clinical response.

What other medicines interact with Colesevelam?

MediHelp also lists interactions of Colesevelam with, for example, Amlodipine-olmesartan-hydrochlorothiazide, Amlodipine-olmesartan, Chenodiol. The full list is on the Colesevelam page.

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