title: On call.  I don't understand the problem with Vytorin.  The two components when used separately work fine, but when mixed together things change.  Why?
authors.forename: Harvey B
authors.initials: HB
authors.lastname: Simon
mesh_terms: D001384:Azetidines / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D004338:Drug Combinations; D000069438:Ezetimibe; D000069499:Ezetimibe, Simvastatin Drug Combination; D006801:Humans; D000960:Hypolipidemic Agents / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use; D019821:Simvastatin / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D001384:Azetidines; D004338:Drug Combinations; D000069499:Ezetimibe, Simvastatin Drug Combination; D000960:Hypolipidemic Agents; D019821:Simvastatin; D000069438:Ezetimibe