I have been reading articles about smoking and smoking cessation programs that are available. This interested me due to a survey that I recently participated in. I asked myself just what does these medicines, gums, patches, etc. do? I found this article which stated that many believe that it takes 72 hours for nicotine to leave your body when in actuality it can take weeks. The less you smoke the nicotine (carbon dioxide) is replaced by oxygen. It's a slow process especially if you have smoked for a long period of time. Through this process your body begins to heal. So my thought on this is if you're looking to quit your method of cessation should not contain any nicotine at all. Nicotine free products if you are going to quit on your own. Of course you should always consult a physician to see which method will be best for you whether cold turkey or a cessation program which nicotine gradually decreases in your body. If you are interested in finding out more just google the title of this thread or this article. www.med-health.net/How-Long-Does-It-Take-for-Nicotine-to.