Etelcalcetide (brand name Parsabiv®) is a calcimimetic medication used to treat secondary hyperparathyroidism in adults with chronic kidney disease (CKD) who are on hemodialysis. It works by binding to and activating the calcium-sensing receptor on the parathyroid gland, which reduces the secretion of parathyroid hormone (PTH). Administered as an intravenous (IV) bolus injection by a healthcare provider at the end of each dialysis session, common side effects include decreased blood calcium levels (hypocalcemia), muscle spasms, diarrhea, nausea, and vomiting