Use nicotine gum, if prescribed. When I don't smoke, I feel restless, and I can't concentrate. These are normal symptoms of nicotine withdrawal. These symptoms are most acute in the first 3 days after stopping. These symptoms will disappear after a few weeks.
Some smokers have few or no withdrawal symptoms.
Other common symptoms include anxiety, irritability, mild headache, and gastrointestinal symptoms such as constipation. Few smokers experience all these symptoms. Like other symptoms, they are only temporary. I'd like to use the nicotine gum you recommend, but I'm afraid I'll become addicted to it. A small percentage of people do use nicotine gum for longer than the recommended 3-6 months.