High Endurance is a highly palatable oral supplement for horses administered before and after workouts and events to replace vitamins, minerals and amino acids lost during performance. Directions: Use 30 ml of tube before event and 30 ml after event to replace vitamins, minerals, and amino acids lost during excess exercise or heat. Keep ample drinking water supplied. High Endurance contains vitamins B1, B2, B6, B12, C and K, copper, niacin, iron, zinc, inositol, d-pantothenic acid, manganese, amino acids, potassium chloride, sodium chloride, magnesium chelate, phosphorous chelate and calcium aspartate. High Endurance is manufactured in the USA by Cox Veterinary Laboratory Inc., a proud member of the National Animal Supplement Council.