Zinc may be good for your everyday galvanizing and diecasting, but it may also be good at fighting colds.
According to the
Cochrane Collaboration, zinc taken as a lozenge or syrup reduced the duration and severity of the common cold in healthy people.
"People taking zinc are also less likely to have persistence of their cold symptoms beyond seven days of treatment. Zinc supplementation for at least five months reduces incidence, school absenteeism and prescription of antibiotics for children with the common cold."