Cholestyramine

Category: pharmacological

Aliases: Questran, Prevalite

Pharmacological Mechanism

Non-absorbed quaternary-ammonium resin that binds bile acids in the gut → prevents reabsorption → increases hepatic conversion of cholesterol → bile acids → LDLR upregulation → LDL clearance. Older agent with poor tolerability.

Dosing Guidelines

Target Organ Systems

Interactions