Dr Zelenko
https://vladimirzelenkomd.com/wp-content/uploads/2021/08/Treatment_Protocol.pdf
This guy who I respect suggests lower levels of Zinc are enough. My experience was that I had to get it up to 200 to push off all of the symptoms other than the histamine reaction which I used a simple anti-histamine, Certirizine. This is all it took and that was that.
I truly think Ivermectin is a better path. Zinc is poorly tolerated by many people even at 50mg.