Used in the treatment of osteoporosis, especially in elderly patients, to improve bone mineral density and reduce fracture risk. Helps in conditions with impaired vitamin D metabolism, such as chronic kidney disease, by bypassing the need for liver or kidney hydroxylation. Employed in hypocalcemia management in patients on dialysis. Supports calcium absorption in the gut and promotes healthy bone mineralization. Also used in secondary hyperparathyroidism to suppress parathyroid hormone overactivity. Commonly prescribed when natural vitamin D activation is compromised due to aging or organ dysfunction.