Vitamin A supplement

DIETARY_SUPPLEMENT4 trials

Sponsors

University of Wisconsin, Madison, Medical Research Council, South Africa, Shiraz University of Medical Sciences

Conditions

Covid19Hypervitaminosis AVitamin A DeficiencyVitamin A Status With Maize Feeding

Phase 2

Vitamin A Supplementation in Children With Moderate to Severe COVID-19

Shiraz University of Medical SciencesCovid19

Start: 2021-06-21End: 2021-12-19Target: 60Updated: 2021-06-18

Unknown Phase

Determination of Changes in Total Body Stores of Vitamin A in Response to Orange Maize Consumption by Zambian Children

CompletedNCT01814891

University of Wisconsin, MadisonVitamin A Status With Maize Feeding

Start: 2012-05-31End: 2012-10-31Updated: 2013-03-20

Total Body Vitamin A Before and After Vitamin A Supplementation in a Community Where Liver is Frequently Eaten

CompletedNCT02915731

Medical Research Council, South AfricaHypervitaminosis A

Start: 2016-04-30End: 2016-06-30Updated: 2016-09-27

Estimating Average Vitamin A Requirements in Indonesian and American Women

CompletedNCT04123210

University of Wisconsin, MadisonVitamin A Deficiency

Start: 2008-03-17End: 2009-05-05Updated: 2019-10-31

Related Papers

Chronic and acute hypervitaminosis A are associated with suboptimal anthropometric measurements in a cohort of South African preschool children.

2022-04-0110 citations

Findings in 3 clinical trials challenge the accuracy of the Institute of Medicine's estimated average requirements for vitamin A in children and women.

2021-05-017 citations

South African preschool children habitually consuming sheep liver and exposed to vitamin A supplementation and fortification have hypervitaminotic A liver stores: a cohort study.

2019-07-0137 citations

Restricting vitamin A intake increases bone formation in Zambian children with high liver stores of vitamin.

2019-06-2812 citations

Serum retinol concentrations demonstrate high specificity after correcting for inflammation but questionable sensitivity compared with liver stores calculated from isotope dilution in determining vitamin A deficiency in Thai and Zambian children.

2015-10-0726 citations

Biofortified orange maize is as efficacious as a vitamin A supplement in Zambian children even in the presence of high liver reserves of vitamin A: a community-based, randomized placebo-controlled trial.

2014-10-08120 citations