Potassium Once Daily, 99mg, 100ct, Veggie Capsule -Essential to cardiovascular function Potassium activates many enzymatic reactions and is essential to a number of physiologic processes including transmission of nerve impulses; contraction of cardiac smooth and skeletal muscles, gastric secretion, renal function; tissue synthesis; and carbohydrate metabolism. Potassium is the major cation of intracellular fluid and is essential for maintenance of acid-alkaline balance isotonicity and electrodynamic characteristics of the cell. In addition it works with sodium to regulate water balance heart rhythm and normal nerve and muscle function. Potassium is an essential mineral that offers a wide range of nutritional support to ensure proper physiological functioning of diverse organ systems. Ingredients; Potassium 99mg (3%) —(as Potassium Amino Acid Complex) Other Ingredients: vegetable cellulose capsule, rice flour, citric acid, magnesium stearate, parsley, chamomile, and watercress.