Nature's Sunshine Potassium fulfills a long list of jobs in the body, including supporting water and pH balance, maintaining blood pressure levels already within the normal range and supporting neuromuscular function. Although there's plenty of potassium in many natural foods, commercial over-processing results in the loss of potassium and increases the sodium content. In addition, illness and physical exertion can deplete the body of potassium. Adequate potassium levels are essential for the body's active transport pump, which moves nutrients into cells. This herbal formula provides essential potassium from several rich, natural sources.