<prompt> Calcitriol causes all exceptIncreases renal tubular reabsorption of Ca2Reduce plasma Ca2 concentrationPromotes intestinal absorption of Ca2Reduces Ca2 resorption by bone  <response>: Calcitriol or 1,25 dihydroxycholecalciferol; a form of vitamin D used as a calcium regulator in the management of hypocalcemia in conditions such as rickets, osteodystrophy, hypoparathyroidism, and complications of renal dialysis; calcitriol promotes intestinal absorption of Ca2, increases renal tubular reabsorption ofCa2 and reduces Ca2 resorption by bone.Ref: Ganong;s review of medical physiology;24th edition; page no-380 