KavaPyronesAnti-Anxiety AgentsPlant ExtractsHydrastisChalconeHerb-Drug InteractionsCimicifugaRhizomePlant MucilageLactonesPacific IslandsHibiscusPyransCarcinogenicity Testsgamma-GlutamyltransferasePlant PreparationsPlants, MedicinalDrug-Induced Liver InjuryRats, Inbred F344Mutagenicity TestsCytochrome P-450 CYP2D6Pyridones