Secalciferol is primarily used in the treatment of conditions related to calcium and phosphate metabolism. It is effective in managing hypocalcemia in patients with chronic kidney disease, particularly those on dialysis, as it helps regulate the levels of calcium and phosphate in the blood. Additionally, it is utilized to treat secondary hyperparathyroidism, a condition often associated with kidney failure, by reducing the production of parathyroid hormone. Secalciferol also supports bone health by promoting calcium absorption in the intestines and maintaining proper bone mineralization. Its application is crucial in preventing bone disorders such as osteomalacia and osteoporosis in patients with impaired kidney function.