Dishman Pharmaceuticals and Chemicals Limited manufactures Alfacalcidol Medicine - Vitamin D Analog. Dishman Pharmaceuticals and Chemicals Limited has achieved ISO 9001 certifications. Alfacalcidol Medicine - Vitamin D Analog is not naturally occurring in the metabolic systems of humans or animals. Alfacalcidol Medicine - Vitamin D Analog is obtained from cholesterol. For treatment and prevention of osteoporosis or bone decalcification alfacalcidol is used. Besides this the substance is also used to treat bone growth disorders such as rickets. This medicine is also used to treat several abnormalities of the parathyroid glands.