Cytostatic drugs are without significant effect on digitoxin plasma level and renal excretion.

@article{Kuhlmann1982CytostaticDA,
  title={Cytostatic drugs are without significant effect on digitoxin plasma level and renal excretion.},
  author={Jan Kuhlmann and Jochen Wilke and Norbert Rietbrock},
  journal={Clinical pharmacology and therapeutics},
  year={1982},
  volume={32 5},
  pages={646-51}
}
In three patients with malignant lymphoma who received 0.5 mg digitoxin before and 24 hr after combination therapy with cyclophosphamide, Oncovin, procarbazine, and prednisone (COPP) or cyclophosphamide, Oncovin, and prednisone (COP), plasma glycoside concentrations and renal excretion were measured 0 to 168 hr after digitoxin and the areas under plasma… CONTINUE READING