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24 June 2021 - Late treatment study
Effects of a 2-Week 5000 IU versus 1000 IU Vitamin D3 Supplementation on Recovery of Symptoms in Patients with Mild to Moderate Covid-19: A Randomized Clinical Trial
Sabico et al., Nutrients, doi:10.3390/nu13072170 (Peer Reviewed)
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Small RCT of 69 hospitalized patients comparing 1000IU and 5000IU daily cholecalciferol, showing faster recovery with the higher dose.
Sabico et al., 6/24/2021, Randomized Controlled Trial, Saudi Arabia, Middle East, peer-reviewed, 12 authors.
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