Purina® Systemiq™ Probiotic 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. The unique and patented probiotic technology in Systemiq supplement survives when other bacteria strains dont, remaining live and active through manufacturing and the horses gastric environment. It has a systemic effect in your horse, helping him to