Digitonin, a detergent that increases cell permeability by binding to cholesterol molecules in the cell membrane, can increase cisplatin accumulation and reduce tumour growth in vitro.

In the liver parenchyma the concentrations are of the same magnitude. Measured with the ¹³³ Xe-clearance technique, Digitonin does not alter the tumor blood flow. Digitonin enhances the tumor-growth retarding effect of CBDCA given intra-aterially at 5 mg/kg but not at 25 mg/kg.