Claims of the effectiveness of smoking cessation services and products are often misleading. It is important that physicians be well informed in order to make appropriate recommendations to their patients who smoke. In this article smoking cessation products and programs are critically evaluated and issues such as cure rates and validation of self-reported abstinence are Many commercial products are available to aid in cessation, although none has been proven effective. With the exception of nicotine polacrilex gum and transdermal patches in conjunction with a multicomponent clinic, medications are generally ineffective. Smoking cessation programs range from the provision of self-help materials to multisession groups and clinics. Multicomponent, behavioral-based group programs have been the most successful. Physicians should raise the issue of smoking cessation as frequently as possible with smokers and should recommend the use of smoking cessation products and services as appropriate. Referrals should be made to programs that base their success rates on scientifically accepted standards, including a 1-year follow-up, inclusion of dropouts and nonrespondents in calculating outcome, and biochemical validation of self-reported abstinence. Reports of success rates of 80% to 95% at the end of a 1-year program should be viewed with skepticism. Ideally, whether working independently or through referral, the physician should actively promote smoking cessation for all patients who smoke.