The patient is receiving cholestryamine (Questran), and complains of constipation. The physician ...

Correct Answer: 2
Rationale: Other drugs must be administered more than 2 hours before, or 4 hours after, the patient takes cholestryamine (Questran) because it can bind to other drugs and interfere with their absorption. These drugs cannot be administered together because cholestryamine (Questran) can bind to other drugs and interfere with their absorption. A minimum of 4 hours administration time between drugs is needed to be sure cholestryamine (Questran) does not interfere with absorption of other drugs. Bisacodyl (Ducolax) cannot be administered with cholestryamine (Questran) as it will not be absorbed; Bisacodyl (Ducolax) does not need to be given with food.

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