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Welchol and Alcohol/Food Interactions

There is 1 alcohol/food/lifestyle interaction with Welchol (colesevelam).

Moderate

Multivitamins With Minerals Colesevelam

Moderate Drug Interaction

Consumer information for this interaction is not currently available.

ADJUST DOSING INTERVAL: Bile acid sequestrants can decrease the absorption of fat-soluble vitamins A, D, E, and K. By binding bile acids, these agents may interfere with normal fat digestion and absorption, thereby preventing the absorption of fat-soluble vitamins. Colesevelam did not induce any clinically significant reduction in the absorption of vitamins A, D, E or K during clinical studies of up to one year. However, chronic use of other bile acid sequestrants has been rarely associated with an increased bleeding tendency due to hypoprothrombinemia resulting from vitamin K deficiency. Isolated cases of Vitamin A (including one case of night blindness) and D deficiencies have also been reported with chronic cholestyramine therapy.

MANAGEMENT: Oral vitamin supplements should be administered at least 4 hours before colesevelam to minimize the potential impact on their absorption.

References

  1. Gross L, Brotman M (1970) "Hypoprothrombinemia and hemorrhage associated with cholestyramine therapy." Ann Intern Med, 72, p. 95-6
  2. Shojania AM, Grewar D (1986) "Hypoprothrombinemic hemorrhage due to cholestyramine therapy." Can Med Assoc J, 134, p. 609-10
  3. Acuna R, Gonzalez Ceron M (1977) "Hypoprothrombinemia and bleeding associated to treatment with cholestyramine (author's transl)." Rev Med Chil, 105, p. 27-8
  4. Vroonhof K, van Rijn HJM, van hattum j (2003) "Vitamin K deficiency and bleeding after long-term use of cholestyramine." Neth J Med, 61, p. 19-21
  5. (2024) "Product Information. Colesevelam Hydrochloride (colesevelam)." Ascend Laboratories, LLC
  6. (2024) "Product Information. Colesevelam (colesevelam)." Dr Reddy's Laboratories (UK) Ltd
  7. (2020) "Product Information. Lodalis (colesevelam)." Bausch & Lomb Canada Inc
View all 7 references

Welchol drug interactions

There are 90 drug interactions with Welchol (colesevelam).

Welchol disease interactions

There are 4 disease interactions with Welchol (colesevelam) which include:

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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