... transport of xenobiotics and metabolites. In animal studies, piperine also inhibited other enzymes important in drug metabolism. By inhibiting ... Extract, Grape Seed Extract, Elderberry Extract, Lutein, Zeaxanthin, Pine Bark Extract, Rosemary Extract, Pine Bark Extract. Lemon Balm Extract 2) Liver Protecting: Silybum Marianum Extract, Artichoke Extract, Antrodia Camphorate Extract, Schisandea Extract ...