Efficacy of nicotine-replacement therapy, bupropion, and a combination of both for treating nicotine addiction

Background
Most of the studies about the efficacy of smoking-cessation medication and its side effects were conducted in developed countries on participants who differ from Arab population in sociocultural and genetic factors.


Patients and methods
A randomized controlled trial was conducted on a convenient sample of 100 smokers at the smoking-cessation clinic. The participants were allocated into four groups: nicotine-replacement therapy (NRT), bupropion (BPP), combination of NRT+BPP, and placebo. Counseling was offered to all participants. Outcomes: self-reported smoking status with biochemical verification (success to stop smoking, lapse, relapse, or failure to stop smoking) at 3 and 6 months from starting treatment.


Results
The total success rate in four studied groups was 14% at 3 months and 8% at 6 months. There was no evidence of any statistically significant difference between any of the interventional groups (NRT, BPP, or their combination) and placebo group at 3 and 6 months as regards success rate (8, 12, 8, and 28%, respectively, at 3 months and 8, 12, 0, and 12%, respectively, at 6 months). There were no serious adverse events in the studied groups. Headache was more significantly reported by placebo group compared with all other groups (P=0.01), and urgency was more significantly reported by placebo group compared with NRT group (P=0.001).


Conclusion
The study found no evidence of the superior effect of NRT, BPP, or their combination over placebo in helping smokers quit smoking at 3 and 6 months. However, more withdrawal symptoms were reported by the placebo group.