Kolorex Mouth & Throat Care contains a unique blend of traditional herbs, including the New Zealand native Horopito. (the same active ingredient as Kolorex Intestinal Care Capsules.) The plant actives in Horopito have been shown to promote a healthy microbial balance. Our normal microflora balance can be adversely affected by many factors, the most common of which are poor diet (for example a diet high in processed foods, sweet or alcoholic beverages), stress, and certain prescription drugs, in particular broad-spectrum antibiotics.