Bio-Shield 50B™ delivers 50 billion live microbials per serving to support daily digestive and immune health in horses. Formulated with two powerful strains of Saccharomyces Cerevisiae yeast (S. cerevisiae CNCM I-1077 and S. boulardii CNCM I-1079), it helps support healthy digestion throughout the stomach, foregut, and hindgut. This advanced formula also promotes immune function by supporting the horse’s natural defenses through the lymphatic system, helping maintain overall health and performance.