I will say this from personal experience. When I had the coof, I was prescribed 50,000 iu of Vitamin D to be taken every other day for only a week. On the days I took it, I felt much better. I would also sit outside in the sun, but unfortunately, there were many cloudy days during that time. If the script had been for every day, I probably would have recovered much faster, and not have felt so bad overall. OTC supplements are not enough when you have the coof.
Vitamin D info.......
FRONT LINE COVID-19 CRITICAL CARE ALLIANCE
PREVENTION & TREATMENT PROTOCOLS FOR COVID-19