Foswin Tablet contains Calcium Acetate 667mg, a phosphate binder primarily used to control hyperphosphatemia in patients with chronic kidney disease (CKD) undergoing dialysis. Elevated phosphate levels in the blood can lead to serious complications such as vascular calcification and bone disorders. Calcium Acetate works by binding dietary phosphate in the gastrointestinal tract, forming insoluble calcium phosphate complexes that are excreted in the feces, thereby reducing phosphate absorption into the bloodstream. Foswin Tablet is typically prescribed to maintain serum phosphate within normal limits, helping to prevent secondary hyperparathyroidism and associated bone disease. It is important to take Foswin with meals to maximize its phosphate-binding effect. Patients should adhere to dietary phosphate restrictions and monitor serum calcium levels regularly, as excessive calcium intake may lead to hypercalcemia. Common side effects may include gastrointestinal discomfort, nausea, or constipation. Foswin Tablet should be used under medical supervision, especially in patients with hypercalcemia or those receiving other calcium-containing medications. Proper dosing and adherence to prescribed therapy are essential to effectively manage phosphate levels and improve overall outcomes in CKD patients.