Substance Withdrawal SyndromeMorphine DependenceNaloxoneNarcoticsNarcotic AntagonistsOpioid-Related DisordersMorphineNeonatal Abstinence SyndromeLocus CoeruleusBuprenorphineOpiumMethadyl AcetateTobacco Use DisorderNaltrexoneSmoking CessationMethadoneAnalgesics, OpioidClonidineTobacco Use Cessation ProductsNicotineCannabisHeroinAlcohol Withdrawal DeliriumReceptors, Corticotropin-Releasing HormoneBehavior, AnimalAlcohol Withdrawal SeizuresNicotinic AgonistsBupropionApomorphineOpiate AlkaloidsHeroin DependenceDynorphinsMarijuana AbuseBehavior, AddictiveRats, Sprague-DawleyAvoidance LearningReceptors, Opioid, kappaDrug ToleranceSmokingChlormethiazoleAlcoholismAnhedoniaNucleus AccumbensStereotyped BehaviorIrritable MoodTime FactorsReceptors, OpioidDose-Response Relationship, DrugAnxietyChewing GumEthanolBrainBenzodiazepinesSodium OxybateOpiate Substitution TreatmentClomipramineCotinineReceptors, Dopamine D2Tyrosine 3-MonooxygenaseAmygdalaSubstance-Related DisordersDouble-Blind MethodPituitary-Adrenal SystemAdministration, CutaneousCentral Nervous System DepressantsCarbon MonoxideTreatment OutcomeCarbamazepineAnti-Anxiety AgentsQuestionnairesHypothalamo-Hypophyseal SystemAffectHypnotics and SedativesRecurrenceDronabinolPsychiatric Status Rating ScalesCodeineCannabinoidsBenzazepinesSeverity of Illness IndexEnkephalinsCorticosteroneMotivationEndorphinsAnalysis of VarianceMorphine DerivativesValproic AcidDopamine Uptake InhibitorsDiagnostic and Statistical Manual of Mental DisordersReceptors, Opioid, muAnticonvulsantsProspective StudiesQuinoxalinesNeuronsEtorphineDrug Administration ScheduleAttention Deficit Disorder with HyperactivitySubstance Abuse DetectionPlacebosDrug Interactions