$OPK - Vitamin D Treatments for #Covid19 "a high dose of Calcifediol or 25-hydroxyvitamin D, a main metabolite of vitamin D endocrine system, significantly reduced the need for ICU treatment of patients requiring hospitalization" https://www.sciencedirect.com/science/article/pii/S0960076020302764 https://www.opko.com/news-media/press-releases/detail/394/fda-authorizes-opko-health-clinical-trial-evaluating