To obtain information the author initially searched PubMed for the occurrence of the following keywords or stems: “smok*,” “tobacco,” “cig*,” “nicotin,*” “varenicline,” “rimonabant,” or “bupropion” crossed with “suicid*” in the title or abstract of articles. A similar search in PsychInfo was performed. Based on reading the titles and abstracts of these citations, the author selected papers to read. In addition, the author conducted searches on PubMed and PsychInfo for reviews on suicide, on the association of suicide and use of antidepressants, and on the safety of cessation medications. References in these papers added other papers. The author queried pharmaceutical companies and regulatory agencies; however, no non-public information was obtained from these companies. Altogether, the author read approximately 180 abstracts and 120 papers. The choice of which papers to include was based on the author’s judgment.
