Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times JUUL Vape Pods 5% or 3% Nicotine Juicefly The Ins and Outs of the Newest eCig: The JUUL by Margo Gordon Medium DYKOne Juul pod contains as much nicotine as a pack of cigarettes. Side effects include increased heart rate and blood pressure, lung disease, chronic bronchitis and insulin resistance leading to type 2