Product Features "High in potassium, fat free, cholesterol free, and low in acidity, no sugar Contains five essential electrolytes--potassium, magnesium, calcium, sodium, and phosphorous. O.N.E. is a natural isotonic beverage. It contains similar levels of electrolytes as those found in human blood. O.N.E. can help promote smoother, more hydrated skin. It is an effective oral rehydration medium, and keeps the body cool. O.N.E. is excellent for replacing lost electrolytes due to exercise and/or illness.