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. 2014 Jul 1;23(7):563–572. doi: 10.1089/jwh.2013.4611

Table 3.

Vitamin D and Calcium Supplementation Recommendations

Source	Recommendation	Target population
National Osteoporosis Foundation³	Calcium: 1,200 mg/day (from diet or supplement)	All
	Vitamin D: 800–1,200 IU/day	Adults age ≥50 years^a
National Academy of Sciences¹⁸	Calcium: 1,200 mg/day (diet or supplement)	All
	Vitamin D: 400 IU/day	Adults age ≥50 years^a
	Vitamin D: 600 IU/day	Adults age ≥70 years^a
Institute of Medicine¹⁷	Calcium: 1,000 mg/day	Women 19–50 years, men 19–70 years
	Calcium: 1,200 mg/day	Women >50 years, men >70 years
	Vitamin D: 600 IU/day	All <70 years^b
	Vitamin D: 800 IU/day	All >70 y^b
U.S. Preventive Services Task Force¹⁶	Recommend against daily supplementation with ≤400 IU of vitamin D3 and ≤1,000 mg of calcium for the primary prevention of fractures	Noninstitutionalized, postmenopausal women
	Insufficient evidence to make recommendations	Premenopausal women; men

^{^a}

Goal serum level 25(OH)D (hydroxyvitamin D) ≥30 ng/mL.

^{^b}

Goal serum level 25(OH)D ≥20 ng/mL.