The efficacy of essiac against cancer can be partially explained by the cancer-fighting characteristics of herbs in the formula. Red clover contains compounds that may keep estrogen from stimulating breast cancer cells. Burdock root reduces the rate at which estrogen is reabsorbed into the bloodstream after it has been processed by the liver. The emodin found in rhubarb root greatly enhances the cure rate of conventional chemotherapies, notably Adriamycin, Platinol, Rubex, and Taxol. The aloe emodin found in sheep sorrel is effective, at least in laboratory studies, against leukemia cells. A report in the August 2004 edition of the Journal of Alternative and Complementary Medicine suggests that the greatest benefit of essiac may be found in treating prostate cancer, more specifically prostate cancer in men with compromised immune systems. Essiac tea has a mild and pleasant taste, although some of its herbs can aggravate certain pre-existing conditions. Information provided by Maintain Rose Herbs.