We sailed through whichever variant we had by using the above. Was like a cross between the flu and a cold. We kept up the vitamins for 2 weeks but did the rest as prescribed. We used Emergen-C vitamin drink from Dollar General. Loaded with C plus a bunch of other stuff like your Bs.
Their early treatment protocol seems to be a little higher than what you posted.
Did you post the prevention protocol?
Those Emergen-C (1000 mg of vitamin C) fizzy drink packets are great stuff. Every time I get the sniffles or am feeling off, I drink one. I haven’t had a cold or flu since 2008.