Excellent regimen. Pretty much what I’ve been doing. I have been taking 5000 iu of Vit D3 per day for years and have never been sick (thank you Lord). With the China Virus, I upped it to 10,000 iu.
I think zinc and quercetin are the most important.
Thank you for your reply as it is always good to know when something works. And you are right on about QUERCETIN, unfortunately most people never heard about it. Take care