St. John's wort extract with a high hyperforin content does not induce P-glycoprotein activity at the human blood-brain barrier.
El Biali M, Wölfl-Duchek M, Jackwerth M, Mairinger S, Weber M, Bamminger K, Poschner S, Rausch I, Schindler N, Lozano IH, Jäger W, Nics L, Tournier N, Hacker M, Zeitlinger M, Bauer M, Langer O.
El Biali M, et al.
Clin Transl Sci. 2024 May;17(5):e13804. doi: 10.1111/cts.13804.
Clin Transl Sci. 2024.
PMID: 38700454
Free PMC article.