Nicotine withdrawal often makes the process of quitting difficult. Vaping does not greatly increase the odds of quitting smoking. Naltrexone is not useful for quitting smoking. They explain different methods of quitting smoking. Their use for quitting smoking is controversial. Randomized controlled trials have not shown that vaping is effective for quitting smoking. The extent to which decreasing cigarette smoking with vaping leads to quitting is unknown. Nicotine use as a tool for quitting smoking has a good safety history. There is robust evidence that vaping is not effective for quitting smoking among adolescents. The effectiveness of vaping for quitting smoking among vulnerable groups is uncertain. The efficacy and safety of vaping for quitting smoking during pregnancy is unknown. There is insufficient evidence on the efficacy of such products on quitting smoking. Bupropion increases the likelihood of quitting smoking by approximately 1.6 fold. This finding persisted whether the smokers were initially interested in quitting or not. She eventually tells him that she's quitting the business and leaving to get married.