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. The Ezzeac Plus Cats Claw is by far the most popular of our teas and outsells all other teas of this type 8 to 1. This tea has all the properties and herbs of our Original Ezzeac Tea, but, we have added cats claw herb to the formula. Available in 32oz or 16oz.