- Severe arrhythmia as a result of the interaction of cetirizine and pilsicainide in a patient with renal insufficiency: first case presentation showing competition for excretion via renal multidrug resistance protein 1 and organic cation transporter 2. Tsuruoka, S., Ioka, T., Wakaumi, M., Sakamoto, K., Ookami, H., Fujimura, A. Clin. Pharmacol. Ther. (2006)