1. we are engaged in offering best grade eliferol-d3 injection 2. we have marked a distinct position in this domain by providing an excellent grade eliferol-d3 injection. cholecalciferol is vitamin d3. vitamin d helps your body absorb calcium. cholecalciferol is used as a dietary supplement in people who do not get enough vitamin d in their diets to maintain adequate health. cholecalciferol may also be used for purposes not listed in this medication guide.