Purina® Systemiq® Probiotic Horse SupplementFor over a decade, Purina has been studying the equine microbiome to help horse owners unlock new insights into their horses health. We looked beyond the usual expectations of what a probiotic can do. Our unique and patented probiotic technology in Systemiq supplement has a systemic effect in your horse, helping them to overcome challenges such as exercise or occasional gastrointestinal stress. Its time to know your probiotic is working as hard as you