Ideal for horses and ponies with soft droppings, acid build-up and intestinal stress, Thrive contains a natural digestive clay which absorbs excess acid in the gut, allowing it pass out of the system harmlessly. It also slows down the rate of passage of food through the digestive system, allowing optimal absorption throughout the gastrointestinal transit. Thrive also provides essential minerals which occur naturally in the clay. Sizes available: 3kgA 3kg pot at 68g per day will last approx. 44 days.