Used primarily in the medical field for the treatment of hyperphosphatemia, a condition commonly associated with chronic kidney disease. It works by binding to dietary phosphate in the digestive tract, preventing its absorption into the bloodstream. This helps to lower and control phosphate levels in patients who are unable to effectively eliminate phosphate through their kidneys. It is often prescribed as an oral medication and is particularly useful for patients on dialysis. Its effectiveness and tolerability make it a preferred choice for long-term management of elevated phosphate levels.