(in the full article, section 6 discusses variability in recommendations, 30ng/ml generally accepted but 40-60 acceptable and well under range of toxic.)
preventative optimal levels are positively associated with better Covid-19 outcomes -- but it takes time to achieve and maintain blood levels. you cannot easily correct chronic deficiency.
however, short term, high dose supplementation in Vit D deficient Covid patients, achieving greater than 50 ng/ml was associated with both faster viral clearance and decreased fibrinogen levels (reduced clotting risk).
Quest Diagnostics Optimal Range = 30 to 100 ng/mL
under 20 is deficient, Endocrinology boards recommend 30ng/ml as minimum to protect against bone loss.
Vitamin D and COVID-19: It is time to act https://pubmed.ncbi.nlm.nih.gov/33012103/
(in the full article, section 6 discusses variability in recommendations, 30ng/ml generally accepted but 40-60 acceptable and well under range of toxic.)
preventative optimal levels are positively associated with better Covid-19 outcomes -- but it takes time to achieve and maintain blood levels. you cannot easily correct chronic deficiency.
however, short term, high dose supplementation in Vit D deficient Covid patients, achieving greater than 50 ng/ml was associated with both faster viral clearance and decreased fibrinogen levels (reduced clotting risk).
https://pmj.bmj.com/content/early/2020/11/12/postgradmedj-2020-139065