Findings

What do systematic reviews say?

2 questions · 2 findings · 2 reviews

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 1 · 50%Moderate 1 · 50%High 0 · 0%

Cessation: Varenicline vs placebo · Smokers who cannot or do not want to quit smoking

The intervention showed no clear difference in cessation: Varenicline vs placebo (low certainty).

1 finding from 1 review

Interventions to reduce harm from continued tobacco use 2016 · Cochrane Headline outcomes only
RR 1.95 [0.86, 4.4]
1 study · 218 participants
Low

Varenicline versus placebo Smoking cessation · people who have quit smoking using a cessation intervention

The intervention probably leads to higher varenicline versus placebo Smoking cessation (moderate certainty).

1 finding from 1 review

Relapse prevention interventions for smoking cessation 2019 · Cochrane Headline outcomes only
RR 1.23 [1.08, 1.41]
2 studies · 1297 participants
Moderate