RT Journal Article SR Electronic T1 Effect of goldenseal (Hydrastis canadensis) and kava kava (Piper methysticum) supplementation on digoxin pharmacokinetics in humans JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics DO 10.1124/dmd.106.012708 A1 Bill J. Gurley A1 Ashley Swain A1 Gary W. Barone A1 D. Keith Williams A1 Philip Breen A1 C. Ryan Yates A1 Leslie B. Stuart A1 Martha A. Hubbard A1 Yudong Tong A1 Sreekhar Cheboyina YR 2006 UL http://dmd.aspetjournals.org/content/early/2006/11/01/dmd.106.012708.abstract AB