SANDPURGE™ is an apple and molasses flavored psyllium product formulated with 100% Pure Psyllium Seed Husk. It is used to help in the removal of sand and dirt from the intestinal tract of horses. SANDPURGE™ supports healthy gut function and may help reduce the possibility of sand colic. Best fed one week per month as a purge administration to remove dirt and sand from the gut in volume. 5 lbs.