2020
DOI: 10.1007/s40520-020-01678-x
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Vitamin D supplementation: upper limit for safety revisited?

Abstract: Vitamin D overdosing includes hypercalcemia, hypercalciuria, and mineral deposits in soft tissues. A safety upper limit of 4000 IU/day, which is consistently accepted, has been challenged, since the risk of adverse events in other systems than calcium-phosphate homeostasis may depend not only on the dose, but on the outcome, the treatment regimen, and possibly the age, sex and vitamin D status. The therapeutic window of vitamin D supplementation may be narrower than hitherto recognized. The prevention and/or c… Show more

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Cited by 78 publications
(56 citation statements)
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“…Vitamin D in excess is associated with hypercalcemia, hypercalciuria and mineral deposits in soft tissues. However, doses of 800 IU to 1000 IU /day the for the prevention of Vitamin D deficiency is considered safe [102].…”
Section: Calcium and Vitamin Dmentioning
confidence: 99%
“…Vitamin D in excess is associated with hypercalcemia, hypercalciuria and mineral deposits in soft tissues. However, doses of 800 IU to 1000 IU /day the for the prevention of Vitamin D deficiency is considered safe [102].…”
Section: Calcium and Vitamin Dmentioning
confidence: 99%
“…the elderly, those of color, obese and those living > 45 o latitude. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] • Vitamin C 500 mg BID (twice daily) and Quercetin 250 mg daily. [23][24][25][26][27][28][29][30][31][32][33][34] It is likely that vitamin C and quercetin have synergistic prophylactic benefit.…”
Section: Prophylaxismentioning
confidence: 99%
“…There is in vitro proof that vitamin D is associated with insusceptible cell reactions to some popular and bacterial respiratory microorganisms. Some have theorized that individuals with low serum vitamin D may be at higher danger of contamination with COVID-19, or do more awful if infected [63]. Some have conjectured that individuals with low serum vitamin D may be at higher danger of disease with COVID-19, or do more awful whenever tainted.…”
Section: Evidence For Vitamin D's Role In Immunity and Infectionmentioning
confidence: 99%