Super High Magnesium Gel is the easy to give magnesium supplement for cattle. Magnesium improves growth rate, maintains good levels of milk production and is vital in the prevention of potentially fatal Grass Tetany (or Grass Staggers) in pastured cattle. Magnesium deficiencies usually do not manifest for 1-6 weeks after cattle are moved to mineral deficient pastures. Prevent a magnesium related illness by using nutritional supplements. Contains magnesium chloride 60 gm. and calcium chloride 1 gm. in a special base of glycerin, water and potassium sorbate as a preservative.