hi guys. i subscribe to the cave man regiment (no soap & minimal face washing) and a little of bit of BP. my diet is not great at the moment so ive started taking vitamin zinc again (i had good results in the past) - seems to help reduce all redness and spots. im taking x3 tablets of 15mg zinc. i was just wondering if this level of zinc would mean that i would need to take copper or some other vitamins? a few other question i have are - what is the safe upper limit for taking zinc? at what level would you need to take an other vitamins to stop side effects of zinc? how much zinc is depleted by a glass or bottle of coca-cola?