Nicotine is a stimulant comparable to caffeine, but is much more addictive. This is the reason GreenNicotine is only recommended for current smokers. As with any stimulants, the user should set personal limitations. However, GreenNicotine would like to make the user aware that nicotine itself is not a carcinogen. Some studies have shown, nicotine can make the user more alert, focused, can enhance memory, and make the user fifty percent less likely to acquire Parkinson's disease and Alzheimer's. Nicotine has been shown to have its benefits, yet it has also shown it increases blood pressure. As with any drug, seek professional guidance prior to consuming.