Copper iud and zinc supplement

Hey,

So I read a bit about copper iud's throwing off the balance of copper and zinc in your body. I only have a small iud, so the copper load isn't that much, but still I'd like to try a zinc supplement to counteract this effect and to see if it does any good to my skin (which is a bit prone to acne).

So, does any of you have experience with taking a zinc supplement? And what's the recommend dose? I tried to Google the answer to that, couldn't find the answer, please help a girl out and share your experience!