yes you can take too much zinc…but i think you need quite a lot
have a looky on the WHO's (not the band's) website for quideline/max amounts to consume of things.
remember if you are getting 100% from a tablet, any extra in your diet puts you over….saying that i take a morrisons own brand multivit every other day just to keep levels up while im at uni. Tescos own brand are also quite good, include obscure (yet massively! important) things like selenium which many brands dont.
cod liver oil most days too omega 3 for the heart
zinc i take when im injured for skin recovery
oooo and echinacea if you get a cold…beasly good stuff