Combination of herbs commonly used in the ongoing treatment of cancer. This tea has the four original herbs plus Watercress to counteract oxalic acid, which is found in the original four herbs. Oxalic acid has been linked to kidney stones or other severe kidney problems. We are the only company that treats each herb separately in preparing the formula, extracting the most from each herb, creating a much more effective tea. Our herbal tea has three times the herbs of any other type formula.