H. Brew-Daniels, A. A. Appiah, D. Edoh, M. M. S. “Herb-Drug Interaction: Effect of Aqueous Extract of Bridelia Ferruginea Leaves on the Pharmacokinetics of Metformin”. Journal of Medicinal Herbs and Ethnomedicine, vol. 1, Nov. 2015, pp. 84-88, https://updatepublishing.com/journal/index.php/jmhe/article/view/2878.