Happy Tummy charcoal is a potentised feed additive which take the toxins out of the horses system (naturally). This reduces the load on the horses immune system which can then proceed to clear up most ailments. A strong immune system is the basis of a good health and by unburdening this, Happy Tummy helps address a wide range of health problems. Its inexpensive, very effective, and can save you a fortune.Please note Images shown may not represent exact sizes colours types etc