FDA reverses order taking Juul vaping products off the market in US, opens door to possible authorization Good Morning America Harvard researchers discover toxin in Juul pods that can cause longterm lung damage Study: Juul Pods Contain Caffeine. What's It Doing There, And What Does It Do? Juul Suspends Online Sales of Flavored E Cigarettes The New York Times Juul asks FDA to authorize new high tech vape product