https://vitamindforall.org/letter.html https://vitamindforall.org/letter.html argues on the other side. There's an impressive list of researchers taking it. If

https://vitamindforall.org/letter.html https://vitamindforall.org/letter.html argues on the other side. There's an impressive list of researchers taking it. If it eventually proves ineffective in preventing or mitigating Covid-19, you're out a few bucks if you were taking it. If you delay taking vitamin D until enough peer reviewed studies develop a final consensus in the years to come, it may turn out that you and/or family members missed out on a protective measure. There remains a significant probability that you might get infected before you get optimal immunity some weeks after finally receiving a full course of vaccination. Many are now learning that the development of knowledge can be an uncertain, contentious and uncertain process, especially in a rapidly evolving situation.