Horse Electrolytes Supplements and Medications at the market lowest price at Allivet. Trusted Equine Pharmacy since 1992. Safe and secure shopping experience. Horse Electrolytes solutions are administered by intravenous infusion for parenteral replacement of acute losses of extracellular fluid. They are a parenteral fluid and electrolyte replenisher for the correction of electrolyte depletion, metabolic acidosis and dehydration of horses.