Vitamin D
Vitamin D supplementation should be universal (level V).
Vitamin D supplementation is an effective intervention in fall prevention (level I).
Routine baseline and follow-up monitoring are not supported because of cost effectiveness except in selected populations (ie, declining BMD, new fractures, initiating new osteoporosis medications) (level V).
Adequate 25(OH)D concentration is >50 nmol/L (level I), with optimal levels >75 nmol/L (level II).
Dose equivalent to 1000 IU/day (25 mcg/d) necessary to achieve this target (level I).
High daily doses (>4,000 IU/d) or high load doses are not recommended (level II).
Safe sunlight exposure should be encouraged (level I). However, it is not sufficient to correct serum levels of vitamin D in deficient residents (level II).
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