Adult smokers (N = 253) without clinically significant depression were rand
omized on a double-blind basis to receive fluoxetine (30 or 60 mg daily) or
a placebo for 10 weeks in combination with cognitive-behavioral therapy (C
BT). It was predicted that fluoxetine would selectively benefit smokers wit
h higher baseline depression, nicotine dependence, and weight concern and l
ower self-efficacy about quitting smoking. Among those who completed the pr
escribed treatment regimen, baseline depression scores moderated the treatm
ent response. Logistic regression analyses showed that 1 and 3 months after
the quit date, fluoxetine increased the likelihood of abstinence, as compa
red with placebo, among smokers with minor depression but not among those w
ith little or no depression. Results suggest that, as an adjunct to CBT, fl
uoxetine enhances cessation by selectively benefiting medication-compliant
smokers who display even subclinical levels of depression.