Indicated in the treatment and prevention of vitamin D deficiency.Indicated in condition caused by low levels of parathyriod hormone,rickets,softening bones,vitamin D deficiency ,osteoprosis,osteoprosis caused by glucocoticoid drugs.It may also used to treat softening of bones from seizure medications and generalized changes in bone associated with renal failure.It may be used in kidney disease to keep calcium level normal and allow normal bone growth.