https://articles.mercola.com/sites/articles/archive/2021/10/14/quercetin-improves-covid-outcomes.aspx?ui=65cbd4bc6e81a2a7794ff6168b44aa5928b2e9059f31291fd7f386463797e4cf&sd=20160331&cid_source=dnl&cid_medium=email&cid_content=art1ReadMore&cid=20211014&mid=DM1018201&rid=1292389234