Electrolyte powder helps control fluid electrolyte imbalances and replenishes the body of lost electrolytes during periods of stress, illness, physical exercise and hot, humid weather. Formulated specifically for the performance horse or dog. Contains the perfect blend of electrolyte salts and mineral to replenish horse s body – min 73% dextrose, min 6% salt, min 3% potassium, min 1% calcium and min 0.8% phosphorous.