Vitamin D is a fat-soluble vitamin that helps your body absorb calcium and phosphorus.
Having the right amount of vitamin D, calcium, and phosphorus is important for building and keeping strong bones.
Vitamin D is used to treat and prevent bone disorders.
Vitamin D with calcium is used to treat or prevent bone loss (osteoporosis).
Vitamin D is also used with other medications to treat low levels of calcium or phosphate caused by certain disorders.
It may be used in kidney disease to keep calcium levels normal and allow normal bone growth.
