An allergy to Questran, cholestyramine, or any of the inactive components used in making the drug. Your healthcare provider or pharmacist has a list of the inactive ingredients.
A biliary obstruction.
Questran Precautions and Warnings: A Summary
Some people should not take Questran. There are also several Questran precautions and warnings to be aware of before starting Questran or beginning new medicines that may interact with it. If you still have questions about Questran precautions and warnings after reading this article, be sure to talk to your healthcare provider.