Cinacalcet hydrochloride is used to treat secondary hyperparathyroidism (elevated parathyroid hormone levels), a consequence of end-stage renal disease; it is also indicated for the treatment of hypercalcemia in patients with parathyroid carcinoma and for the treatment of secondary hyperparathyroidism in people with chronic kidney disease on dialysis. Here, PTH is linked to secondary hyperparathyroidism.