Over 3 years ago, our cat, Flora, developed a mass (tumour) in her abdomen and lost a significant amount of weight. She was about 12 years old at the time. I started giving her a dropper of concentrated essiac tea once a day and mixing about 1/2 teaspoon of the powdered herbs in her food. The tumor went away and she put weight back on. She is now 15 years old and doesn't look or act like a 15 year old cat. I've continued to give her the dropper of concentrate at least once a week up to every other day. I've also given the powdered essiac herbs to our dog for allergy eye drainage that would easily get infected. Since we started the dog on this, her allergy eye problem has been gone for over a year now. Again, about 1/2 tsp once a day.