If you’ve got bad breath or want to avoid it, Wrigley’s Gum recently enhanced their Eclipse line—both their gum and mint lines—by adding magnolia bark extract. In a 2007 study, the magnolia bark extract was determined to be 99.9 percent effective in killing bacteria associated with halitosis and in doing so within five minutes of treatment. That means you don’t just cover up bad breath, you actually prevent it.