I’m not taking anything for something that has a 99% survival rate
You could take massive D3 i.e. 900 units per pound of body weight. I did and my CCPflu was gone in a day. Of course, I have taken 5000 iu (125 mcg) a day for 16 years and have had no virus maladies at all in that time other than the little scrape with CCP.