BupropionNicotineAntidepressive Agents, Second-GenerationNicotinic AgonistsTobacco Use DisorderDopamine Uptake InhibitorsSmoking CessationTobacco Use Cessation ProductsOxidoreductases, N-DemethylatingGanglionic StimulantsReceptors, NicotinicMecamylamineSubstance Withdrawal SyndromeNicotinic AntagonistsCotinineChewing GumDelayed-Action PreparationsSmokingBenzazepinesAdministration, CutaneousQuinoxalinesAryl Hydrocarbon HydroxylasesNomifensineAmphetamine-Related DisordersDose-Response Relationship, DrugMethamphetamineSelf AdministrationDouble-Blind MethodDipyroneAntidepressive AgentsHerb-Drug InteractionsHydroxylationDihydro-beta-ErythroidineDrug InteractionsPropiophenonesSertraline