ProActive ProBiostatin 1.5 Pounds Equine Powder Two unique Strains of Probiotics & Patented Gastric Facilitator Proven Bio-regulator that Supports Energy, Muscle, & Overall Health. Promotes Healthy Gut Flora & pH to Address Occasional Gastric Distress Assists in the Digestion & Absorption of Key Nutrients Moderates Environmental Impacts on the GI Tract (Travel, Training, Weaning etc.