Purpose Nicotine replacement therapy (NRT) is often used suboptimally by smokers.
Previous research has focused on cognitions and attitudes as potential reasons. This study
drew on theoretical frameworks of behaviour to comprehensively explore smokers' NRT use
to identify new intervention targets. Methods Semi-structured face-to-face interviews were
conducted with 16 adult UK-based smokers and ex-smokers who used NRT in recent quit
attempts (mean (SD) age= 34.9 (10.3); 82.3% women). The COM-B (capability, opportunity …

Methods: Semi-structured face-to-face interviews were conducted with 16 adult UK-based
smokers and recent ex-smokers who used NRT during quit attempts in past five years. The
COM-B (Capability, Opportunity, Motivation, Behaviour) model and the Theoretical Domains
Framework (TDF) informed the topic guide and analyses. Data were analysed using
framework analysis in Nvivo 11. Results: Two related behaviours were identified relevant to
optimal NRT use: use of NRT per se (B1), and engaging with information and support with …