HydraBoost is a premium quality, highly palatable electrolyte supplement developed for the high performance equine athlete. Electrolytes are substances which maintain the proper fluid balance within your horse?s body and play a vital role in muscle and nerve activity. Sodium, chloride, potassium, and magnesium are the crucial components in HydraBoost. Sweating is a common way in which a horse can lose electrolytes. The effects of electrolyte loss are dehydration, muscle stiffness, lethargy and colic like symptoms.