If you're one of many ransacking the cold and flu aisle this winter, you might have spotted a common ingredient: zinc. 

It has been touted as a remedy for sickness — even a preventative. 

A comprehensive review has delved into the current research into the supplement and its effectiveness. 

Guest

• Assistant Professor Daryl Nault, Maryland University of Integrative Health

References

• Zinc for prevention and treatment of the common cold