Essiac International Extract Formula contains inulin premium quality herbs and natural herbal supplements. It is gluten free and natural as well as laboratory certified. Nurse Rene M. Caisse is world renowned for having made significant contributions to the field of natural herbal supplements. From 1922 to 1978 Nurse Caisse used Essiac her original herbal formula to support health to people worldwide. Essiac is available in powder liquid and capsule formulas.