Yes we take 4,000 units of D3 with K2 daily but I don’t think I would go much above that. We also take C, Quercetin, zinc, and turmeric plus lately homemade HCQ. So far not a sniffle.
I think anything above that is too much. Lot of Freepers here talking about ridiculous amounts of D3 in other threads, like 10,000 units, seems like overkill to me.
Also a diet with plenty of eggs and fatty fish like salmon and sardines will further ensure adequate levels of D3.
I also take zinc and C every day.
Never been sick during this whole COVID thing even though I spend much time in NYC and on public transportation. I also don't believe in masking or social distancing. I also don't mind being in crowds.
Interesting. Are you using Cinchona bark?