Copper surfaces are reactive with water and air. My proof of this is the Cu water pipes in my basement, which show a little discoloration at joints where slow leaking has occurred, though the white build up is lime from the water and not due to the Cu. Also, Statue of Liberty, was copper/bronze colored, then green, then restored to copper/bronze color. I'm also a chemist, not that that's the proof you seek.

All that said, since your condition is affecting you as much as it is, a voodoo doll would likely be equally effective at bring you improvement as drinking 12 h old water from a copper cup.

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To breathe, to feel, to know I'm alive.