While cold and flu season may conjure thoughts of immune-boosting supplements and functional wellness products, in reality, consumer interest in products that support immune health is no longer confined to certain times of year. Learn more about the market's ingredients, sales data and regulations. Takeaways include: *Nearly nine in 10 consumers show interest in buying functional foods and beverages for immune health. *Up-and-coming ingredients for immune health in todays market include green tea, curcumin and bosweillia. *Immune product marketers have tools, but finding the right balance of benefit and non-disease claims can be tricky.