Organic Magnesium, Vitamin E and Vitamin B1 Supplement for Horses Mag-E is the ideal supplement for working and travelling horses to provide a well absorbed form of magnesium, as well as essential Vitamin E and Vitamin B1, to help nerve and muscle function.    Mag E contains: High levels of organic magnesium - with the majority provided by “organic” amino acid (yeast) chelate that reaches the absorption sites as an “amino acid shielded” complex for optimum absorption. Natural and synthetic Vitamin E – corrects low dietary levels to ensure optimum muscle and nerve function. Vitamin B1 (thiamine) – to help make up shortfalls in the diet of working horses fed on grain based, low roughage diets. Debittered yeast as a natural food compound to help maintain normal gastro-intestinal function in working, travelling or competitive horses.     Highly palatable, with vanilla flavouring, to tempt even the fussiest of eaters!  Mag-E with organic magnesium supplements low dietary uptake to help keep your horse unfazed by training, traveling and competition.