An Information Circular from the U.S. Department of the Interior, Bureau of Mines, from the same year specified that it used NA to indicate that information was not available and NAp to indicate that a category information was Not applicable.
Symptoms of nicotine withdrawal include: 1  intense cravings for nicotine. 2  tingling in the hands and feet. 3  sweating. nausea and intestinal cramping. 4  headaches. coughing, sore throat. 5  insomnia. difficulty concentrating. 6  anxiety. irritability. 7  depression. weight  gain.
Withdrawal symptoms make it harder to quit nicotine products and most methods for quitting smoking involve reducing nicotine withdrawal. The most common symptoms are irritability, anxiety and difficulty concentrating. Depression and insomnia are the least common.