Zinc is an essential mineral that is critical to many biochemical functions. Contributes to the normal function of the immune system. Contributes to normal fertility and reproduction. Contributes to the maintenance of normal nails. Contributes to the maintenance of normal skin. Contributes to the maintenance of normal hair. Contributes to normal cognitive function. -shellfish and other seafood– dairy products– nuts and seeds– whole grainsThe amount of zinc your body requires is approx. You should be able to get all the zinc you need from a varied and balanced diet. If you choose to take a supplement don’t take more than 25mg of zinc supplement a day unless advised by a GP. Source: www.nhs.uk (Next review due 03/03/2020)