A method and medicine for treating leukemia or other cancer includes administering to a patient diagnosed with leukemia or other cancer a treatment regimen that includes periodic doses of a combination of emodin and digoxin.The treatment method may include periodic doses including approximately 5ug/ml or 10 ug/ml or more of Emodin, along with respectively 0.05 ug/ml or 0.10 ug/ml or more of digoxin. Other combinations may be used in the treatment, including combining 5ug/ml or more of emodin with at least approximately 0.10 ug/ml digoxin, or at least approximately lOug/ml 5 emodin with at least approximately 0.10 ug/ml digoxin, or more than 5ug/ml of emodin with at least approximately 0.05 ug/ml digoxin, or at least approximately 10ug/ml emodin and at least approximately 0.05 ug/ml digoxin.