When horses work, or during hot weather, they regulate their body temperature by sweating. Sweating not only loses fluid as it evaporates, but also essential body salts, particularly sodium, potassium, calcium and magnesium. Failure to replace these body salts (known as electrolytes) can result in fatigue.
Simply add to feed or dissolve in drinking water. For horses in heavy work or during periods of extreme heat, feed the more concentrated Electro Salts. Always ensure a supply of clean fresh water is readily available