Potassium (citrate)Item Description Essential mineral for vascular function and overall health* Potassium activates many enzymatic reactions and is essential to a number of physiologic processes, including transmission of nerve impulses, muscle contraction, gastric secretions, 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