This product is a 1.5 oz ration that is intended to be hand-delivered or top dressed over the forage or feed of your choice. Our MagBoss 5,000 is a highly concentrated Magnesium mineral. Magnesium aids in normal muscle function, nerve function, healthy immune system, and also helps regulate blood sugar levels. Our MagBoss 5000 is very “palatable” meaning desired by Equine Athletes. Magnesium functions as an electrolyte and is involved in over 300 metabolic processes in the horses body. Proper magnesium levels are crucial for growing and heavily exercised horses. We offer three different bucket sizes to choose from.