Etelcalcetide is used for the treatment of secondary hyperparathyroidism in patients with?chronic kidney disease?(CKD) on hemodialysis. Etelcalcetide is a calcimimetic agent that allosterically modulates the calcium-sensing receptor (CaSR). Etelcalcetide binds to the CaSR and enhances activation of the receptor by extracellular calcium. Activation of the CaSR on parathyroid chief cells decreases PTH secretion.https://www.creative-peptides.com/product/etelcalcetide-item-10-101-140-34909.html