Tylenol can be fatal to ferrets! Pediapred can be used to help with the pain. If it is lymphoma or lymphosarcoma then pediapred will help perk your ferret up also. I am not sure what is in Essiac or how it is supposed to work. however if your ferret is terminal then it will not hurt to try it. Again no tylenol. Hope that helps, Jerry Murray, DVM [Posted in FML issue 3411]