Sunset Vape JUUL manufacturers aren't required to disclose their ingredients. Cartridges or pods may contain arsenic, formaldehyde, rubidium, benzaldehyde, cadmium and or lithium. Scientists are still working to understand more fully the health Is JUUL More Harmful Than Cigarettes? Understand the Risks FDA orders Juul e cigarettes off the market in the U.S. STAT The Medical Minute: Hazards of juuling or vaping Penn State University 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