Juul's nicotine salts are dominating the market and other companies want in The Verge FDA Orders Juul to End Vaping Sales Respiratory Therapy FDA reverses order taking Juul vaping products off the market in US, opens door to possible authorization ABC News The Dangers of Juuling National Center for Health Research FDA Denies Approval for Juul Tobacco and Menthol Vapes FDA bans Juul e cigarettes, widely blamed teen vaping surge PBS News