Drug interactions
Cholestyramine + Cholic acid
Severity: Major
Cholestyramine and Cholic acid: major 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 cholic acid in the intestine and prevent its absorption. This can reduce the efficacy of cholic acid replacement therapy in bile acid synthesis disorders.
What this interaction means in plain words
Cholestyramine and Cholic acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Cholestyramine belongs to Cardiovascular; Cholic acid belongs to Gastrointestinal Tract.
Why it happens
Cholestyramine binds bile acids in the gut lumen, preventing their absorption.
What to do
Take cholic acid at least 1 hour before or 4-6 hours after cholestyramine. Monitor liver tests and bile acid response.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Cholestyramine
Other interactions of Cholic acid
Frequently asked questions
Can I take Cholestyramine with Cholic acid?
MediHelp rates the interaction as major. Cholestyramine and Cholic acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Bile acid sequestrants bind cholic acid in the intestine and prevent its absorption. This can reduce the efficacy of cholic acid replacement therapy in bile acid synthesis disorders.
How serious is the interaction between Cholestyramine and Cholic acid?
MediHelp rates it major, 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 4-6 hours after cholestyramine. Monitor liver tests and bile acid response.
What other medicines interact with Cholestyramine?
MediHelp also lists interactions of Cholestyramine with, for example, Deferasirox, Leflunomide, Levothyroxine. The full list is on the Cholestyramine page.
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