Thunderbrook Daily Essentials is the ultimate performance balancer. Just one 50g measure per day provides the daily recommended rate of the main vitamins and minerals for a large healthy horse at maintenance* Essential nutrients with minimal calories – ideal for ‘good doers’CompositionMonocalcium Phosphate, Calcium Carbonate, Magnesium Carbonate, Yeasacc 1026, Blue-Green AlgaeVitaminsVitamin A 405,405iu/kg; Vitamin D3 81,081iu/kg; Vit E 19,864mg/kg; Biotin 270.2mg/kg Trace Elements: Calcium Iodate 85mg/kg; Zinc chelate 72,072mg/kg, Copper chelate 22,522mg/kg; Selenium chelate 11,750mg/kg; Magnesium chelate 20g/kg; Calcium chelate 20g/kg