Letters Smoking cessation and psychiatric symptoms

Still not clear that smoking cessation drugs do not cause psychiatric symptoms

BMJ 2013; 347 doi: https://doi.org/10.1136/bmj.f7065 (Published 27 November 2013) Cite this as: BMJ 2013;347:f7065
  1. Stephen P Davies, consultant psychiatrist1
  1. 1ABM University NHS Trust, Department of Psychological Medicine, Morriston Hospital, Swansea, UK
  1. stephen.davies{at}wales.nhs.uk

Although Thomas and colleagues have made a major contribution to this topic, three points suggest that it is still not clear whether these drugs lead to psychiatric symptoms.1

Firstly, the confidence intervals for suicide and self harm are too wide …

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