SimvastatinHydroxymethylglutaryl-CoA Reductase InhibitorsAnticholesteremic AgentsLovastatinAzetidinesGene DosageDosage Compensation, GeneticHypolipidemic AgentsHeptanoic AcidsHypercholesterolemiaDosage FormsPravastatinPyrrolesMevalonic AcidFluorobenzenesCholesterol, LDLCholesterolDose-Response Relationship, DrugPolyisoprenyl PhosphatesDrug Therapy, CombinationDouble-Blind MethodLipidsNiacinRhabdomyolysisDrug Interactions