Juul e cigarettes win FDA authorization, sources say JUUL Pod Ingredients: What's in E Cigarettes? 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 Do Juul Pods Contain Formaldehyde Juul users inhaling chemicals not listed JUUL Pod Ingredients: What's in E Cigarettes? DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs.