“HPLC Method for Determination of Rifaximin in Human Plasma Using Tandem Mass Spectrometry Detection”, East Cent. Afr. J. Pharm. Sci., vol. 13, no. 3, pp. 78–84, Nov. 2018, Accessed: Jun. 15, 2026. [Online]. Available: http://jsep.uonbi.ac.ke/ojs/index.php/ecajps/article/view/113