Osteocortisol means Alfa Osteocortisol, and side effects include nausea, vomiting, constipation, loss of appetite, and itching of the skin, the exact occurrence of which varies from person to person. Alfacalcitol is suitable for the improvement of hypoparathyroidism, chronic renal insufficiency, anti-vitamin D rickets, as well as hypocalcemia, hand and foot twitching, bone pain and bone damage and other osteochondrosis due to abnormal metabolism of vitamin D. It can also be used for osteoporosis. Contraindications to use include patients with hypercalcemia. Adverse reactions such as nausea, vomiting, loss of appetite, and skin itching may occasionally occur after administration. Adverse reactions in the gastrointestinal system, liver, psychoneurological system, and circulatory system, such as gastric pain, constipation, elevation of gammaglutaminase and gammaglutamyltransferase, headache, and mild elevation of blood pressure, may occur after administration of super large doses of the drug. There are several manufacturers of this drug, and the side effects mentioned in the instructions for each drug vary greatly, while the exact occurrence of side effects also varies from person to person. The use of this drug should be carried out under the supervision of a specialist and should not be used without authorization.