Symptoms of nicotine withdrawal may include irritability, trouble sleeping, anxiety, difficulty concentrating, restlessness, depression, and increased appetite.
(But before you decide that you don't want to deal with these symptoms, remind yourself that the side effects of smoking include lung disease, emphysema, cancer, and heart disease.)
The more dependent you are on tobacco products, the worse you're likely to feel when you quit. For example, a social smoker might not experience any physical symptoms of nicotine withdrawal, while someone who always smokes within the first 30 minutes of waking up may need extra support for the first few days or weeks.
How long does nicotine withdrawal last? Symptoms tend to be worse within the first 3 days after quitting tobacco, and then go away after 3 or 4 weeks.