Percys Powder is a blood tonic, and helps maintain normal blood. The mineral salts in Percys Powder readily dissolves in water (or fruit juice) to supply the body with a means of checking the build-up of acids and phosphate, and flushing them out in the urine. ( Acid build-up in the tissues causes infection and chronic disease.) The minerals in Percys Powder are also involved in regulating water balance, in making new blood, in the operation of muscles and nerves, in the movement of oxygen and carbon dioxide, in transporting cell nutrients and regulating cell nutrition , in making enzymes involved in digestion, energy production and protein building, and in activating hormones that regulate many body processes. Why take Percys Powder? Because modern diets, while containing these minerals, do not have enough of them to balance the abundant acid minerals coming from the soils conditioned by chemical fertilisers and processed additives.