[semerda]

Step 1. VD3 blood test is a must to determine whether one is deficient. If you work indoors all day there is a high chance you are deficient. Your GP can help you boost it up using 70K IU prescription VD3.

Step 2. Then maintenance. This is all a trial and error and more blood tests. 800 IU / the national recommendation is a joke. Dr. Fauci takes 6,000 IU each day. (see FOIA docs with his email saying what he takes).

I work in tech and take 10 IU each day and have maintained a ~ 60 ng/mL.

Anything over 50 ng/mL shows benefits in fighting respiratory viruses and keeping mortality close to zero. ref: https://pubmed.ncbi.nlm.nih.gov/34684596/#&gid=article-figur...