Balakrishnan B, Dhandapani M, and Sivamani G. “Effect of Verapamil on P-Glycoprotein Expression in Breast Carcinoma”. International Journal of Pharmaceutics and Drug Analysis 6, no. 5 (May 16, 2018): 523-528. Accessed April 17, 2026. https://ijpda.org/index.php/journal/article/view/398.