This is a combination of bitter herbs which are specifically for the digestive system, stimulating and assisting in digestion, good for horses with poor appetite, and equally beneficial to horses with a good appetite but who do not gain or hold their weight. The digestive system is of the utmost importance and if it is not working properly or is overloaded, then it can affect the performance and health. This product is to assist at times needed but does not replace a natural clean diet. Older horses benefit from a one bottle course of Digestive Bitters periodically, annually or bi annually, especially in the spring.