We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEffect of St John's wort on drug metabolism by induction of cytochrome P450 3A4 enzyme.AuthorsMarkowitz, John S; Donovan, Jennifer L; DeVane, C Lindsay; Taylor, Robin M; Ruan, Ying; Wang, Jun-Sheng; Chavin, Kenneth DAbstractSt John's wort is a popular herbal product used to treat depression but it has been implicated in drug interactions.PublicationJAMA, 2003, Vol 290, Issue 11, p1500ISSN1538-3598Publication typeJournal ArticleDOI10.1001/jama.290.11.1500