TABLE 1

Minimum requirements for vitamin D as defined by the Endocrine Society guidelines

Patient characteristicsMinimum requirementCommentsa
Age 19–50600 IU/dayIncreasing and maintaining the 25(OH)D level consistently above 30 ng/mL may require at least 1,500–2,000 IU/day
Age 51–70600 IU/dayTo maximize bone health and muscle function
Age ≥ 65800 IU/dayFor the prevention of falls and fractures
Pregnant and lactating female patients600 IU/dayAt least 1,500–2,000 IU/day may be needed to maintain a blood level of 25(OH)D above 30 ng/dL
Adults with obesityGive at least 2 to 3 times more vitamin D to meet bodily requirements

  • ↵a With the recommendation not to exceed 4,000 IU daily maintenance dose.

  • IU = international units; 25(OH)D = 25-hydroxyvitamin D

  • Based on information in reference 10.