The Cowden protocol calls for taking burbur with parsley.....or burbur with pinella:
www.nutramedix.ec/pdfs/Condcowdenschd.pdfHowever, the product compatibility chart I'm linking below shows the 3 detox tinctures to be compatible:
www.nutramedix.ec/ns/images/stories/ProductCompatibilityChart.pdfIf anything, I'd look at dosing all of them at least 3x daily to get more "coverage".