How long does nicotine stay in breast milk?
Not only does nicotine get in breast milk — it can also stay there for a significant period of time. If you’re wondering how long it takes for nicotine to get out of your system, the answer is that it depends.
There are a number of factors that can determine how long it takes for nicotine to leave your system. These include how often you smoke, your age, genetics, and what medications you’re currently taking. For light smokers who smoke once or twice a week, nicotine can take two to three days to clear from the system. For heavy smokers who smoke a pack or more a day, it may take up to a full year for nicotine to completely leave your body.