That's why I suggested 50 mg tablets several times a week, then you get high zinc 2 days and low zinc 5 days a week, probably enabling better copper absorption. (perfecthealthdiet.com)
Fifty milligrams of zinc given over ten weeks impaired both iron and copper absorption in one study. (thyroidpharmacist.com)
On the flip side, consuming more than 50 mg of zinc can limit copper absorption, so you need to make sure that your copper and zinc intake are balanced. (bodybuilding.com)