Thanks for posting it!
Regarding zinc supplementation, it’s important to keep in mind that a balance is needed between zinc and copper.
Also, according to the Med Cram Dr. 50mg of zinc is the high end of supplementation, and should not be followed long term.
A link below to a paper regarding zinc/copper:
Zinc-induced copper deficiency
Search domain pubmed.ncbi.nlm.nih.gov/3335323/https://pubmed.ncbi.nlm.nih.gov/3335323/
Copper deficiency was found in an adult patient who had received excessive daily oral zinc for 10 mo. The deficiency was characterized by hypochromic-microcytic anemia, leukopenia, and neutropenia. Although initially thought to be caused by iron deficiency, the anemia did not respond to oral or intravenous iron.