How Vitamin B12 interacts with Bile acid sequestrants
Interaction Type: Depletions
Interaction Rating: Study Supported

These medications decrease the absorption of vitamin B12. Supplementation with the affected nutrient may be necessary.(1)
These drugs include cholestyramine, colestipol, colesevelam.
 
References
  1. View Abstract:  Leonard JP, et al. In vitro Binding of Various Biological Substances by Two Hypocholesterolaemic Resins. Cholestyramine and Colestipol. Arzneimittelforschung. 1979;29(7):979-81.
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