<prompt> Mechanism of action of Calcitriol is:Decreased calcium resorption calcium from boneIncrease calcium absorption from intestineDecreased calcium absorption from kidneyDecrease calcium absorption from intestine  <response>: Calcitriol is a synthetic version of Vitamin D3 used to treat calcium deficiency with hypoparathyroidism Bone-calcitriol increases resorption of calcium from bone.kidney-it increases calcium reabsorption in the distal tubule.intestine-it promotes intestinal absorption of calcium Ref.Essentials of medical pharmacology TD Tripathi 7th edition page no.338 