Vitamin D3 is a fat-soluble vitamin that helps your body absorb calcium and phosphorus is important for building and keeping strong bones. Vitamin D3 is used to treat and prevent bone disorders (such as rickets, osteomalacia). Vitamin D3 is made by the body when skin is exposed to sunlight. Sunscreen, protective clothing, limited exposure to sunlight, dark skin, and age may prevent getting enough vitamin D from the sun.
Vitamin D3 with calcium is used to treat or prevent bone loss (osteoporosis). Vitamin D3 is also used with other medications to treat low levels of calcium or phosphate caused by certain disorders (such as hypoparathyroidism, pseudohypoparathyroidism, familial hypophosphatemia). It may be used in kidney disease to keep calcium levels normal and allow normal bone growth. Vitamin D drops (or other supplements) are given to breast-fed infants because breast milk usually has low levels of vitamin D.

Vitamin D3 is a fat-soluble vitamin that helps your body absorb calcium and phosphorus is important for building and keeping strong bones. Vitamin D3 is used to treat and prevent bone disorders (such as rickets, osteomalacia). Vitamin D3 is made by the body when skin is exposed to sunlight. Sunscreen, protective clothing, limited exposure to sunlight, dark skin, and age may prevent getting enough vitamin D from the sun.
Vitamin D3 with calcium is used to treat or prevent bone loss (osteoporosis). Vitamin D3 is also used with other medications to treat low levels of calcium or phosphate caused by certain disorders (such as hypoparathyroidism, pseudohypoparathyroidism, familial hypophosphatemia). It may be used in kidney disease to keep calcium levels normal and allow normal bone growth. Vitamin D drops (or other supplements) are given to breast-fed infants because breast milk usually has low levels of vitamin D.