@dkh in addition to various vitamins and minerals try taking vitamin B complex and vitamin B12... This really works good... The vitamin D3, zinc, and vitamin C helped me to knock out the coronavirus last year in one day, except for the fatigue which lasted for about 2 weeks, but it looks like it came back... a client who works in that field at a major Hospital said to get the vaccine and it'll boost up the natural immunity that I already have,  so it looks like that's what I have to do...