Are you sure you're taking Vitamin A, or is that beta carotene? That's more worrisome than the amount of zinc, though why are you taking so much zinc? Both are toxic in overdose. B6 can also be a problem in overdose for some people -- there's a neuropathy associated with it that doesn't affect most people, but it does some. Make sure you have a good reason to think you're deficient in these and actually need them. And again, make sure you're getting your vitamin A in the form of beta carotene, which will make as much A as you need but will flush any excess, whereas A stores in fatty tissue and adversely affects the liver in excess.