I just want to warn people that while getting adequate zinc is desirable, please be careful with supplements!
The maximum safe dose is not very high—40 mg if you are over 19, less for younger people—and between supplements and the normal amount of zinc in the diet, it is very easy to get too much zinc.
Excess zinc interferes with some medications. Excess zinc also leads to dose-dependent symptoms of toxicity. This toxicity, even if you aren’t aware of it, can have long-term consequences. It can cause urinary tract problems.
Humans evolved with a diet containing specific ranges of micronutrients. The goal of proper nutrition is to achieve an intake within those ranges. Too much is just as bad as too little.
The tables in this NIH article (http://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/) tell 1) RDA of zinc, 2) some foods containing zinc, and 3) the maximum safe daily intake of zinc.
Thanks for the link.