Luci can be used with cartridges containing nicotine, a highly addictive substance that's used as a stimulant when absorbed in small quantities such as in cigarette smoking. Nicotine in our product is delivered in a similar method as in traditional cigarettes. Therefore, the same precautions and health risks for nicotine use in cigarettes apply to nicotine cartridge use in our product. Do not over-smoke our product. Instead, take natural breaks between smoking our product. Cigarettes may burn out, but our product can be used continually without a natural break such as when your cigarette burns out. Additionally, our products are not for minors, non-smokers, pregnant or breastfeeding women, people suffering from heart disease, irregular rhythmic heart beats, asthma, diabetes, high blood pressure, or any other serious medical condition. Talk with your physician if you are under medication. Nicotine may interfere with certain medications or treatments. If you experience an allergic reaction or experience symptoms of nicotine overdose such as nausea, vomiting, confusion, cold-sweat, weakness, altered respiration or heartbeats, seizure, or if you experience any other negative side effect, cease use and seek medical attention. Refer to the user manual for more detailed health warnings and disclaimers.