Paricalcitol
（重定向自Zemplar）
![](/Images/godic/202502/22/Paricalcitol.svg5311.png")
![](/Images/godic/202502/22/Paricalcitol3Dan5311.gif")
![3D structure of paricalcitol](/Images/godic/202502/22/Paricalcitol_structure.svg5311.png")
Paricalcitol (chemically it is 19-nor-1,25-(OH)2-vitamin D2. Marketed by Abbott Laboratories under the trade name Zemplar) is a drug used for the prevention and treatment of secondary hyperparathyroidism (excessive secretion of parathyroid hormone) associated with chronic renal failure. It is an analog of 1,25-dihydroxyergocalciferol, the active form of vitamin D2 (ergocalciferol).