I'm surprised hypnotherapy is not mentioned as an alternative treatment for smoking cessation in this article. Though Natural Standard gives hypnotherapy a "C" for an evidence grade, perhaps there simply have not been many studies, or those that have been conducted were poorly designed. Hypnotherapy is widely used with success for smoking cessation. I found this interesting article regarding hypnosis and smoking cessation: http://www.huffingtonpost.com/2012/02/11/hypnosis-quit-smoking_n_1248444.html