Thank you for warning us, I had no idea about the different kinds let alone which would be safe to take. I feel like I get the right amount of copper balanced with the right balance of zinc because I've been taking Dr. Andrew Weil's vitamins for many years and he keeps up with the latest science and changes his formulas accordingly if the need arises to keep it in line with the most up--to-date science. Because I know I'm getting enough I do wonder if I could possibly get too much adding the cps to so many of my skincare products but I guess not if the top is 5 mcg and I think his formula is less than 5 to (forget the zinc ratio at the moment.). But so good to know not to ever take the one you mentioned. Thank you for telling us!