Long-Acting Injectable Buprenorphine for Opioid Use Disorder: A Qualitative Analysis of Patients’ Interpersonal Relationships during the First Year of Treatment

<i>Introduction:</i> Long-acting injectable buprenorphine (LAIB) is a new treatment for opioid use disorder. Drawing upon new materialism and the concept of social capital, this article provides a focused analysis of how LAIB affects, and is affected by, patients' relationships with other people. <i>Methods:</i> Data derive from a longitudinal qualitative study. Twenty-six people (18 males; 8 females) initiating LAIB were recruited from England and Wales (2020/2021) and interviewed up to six times each over a year (125 interviews in total). Interviews were audio-recorded, transcribed, and coded. Coded relationship data were summarized in Excel and analyzed <i>via</i> Iterative Categorization. <i>Results:</i> Core significant others who did not use substances offered participants important support with LAIB. Children and grandchildren provided motivation for LAIB, whilst other family relationships could be supportive and unsupportive. Participants wanted to avoid friends, peers and associates who might offer them substances, but valued sharing experiences with others in similar circumstances. Whilst some participants were unconcerned when treatment staff did not contact them, others were angry and upset. Those who did not continue LAIB or were lost from the study were more isolated at recruitment. Meanwhile, participants who remained on LAIB described increased sociability over time. <i>Conclusions:</i> Findings are consistent with ideas relating to new materialism (LAIB is part of an interacting network of material and non-material factors) and social capital (those with supportive relationships benefited more from LAIB). Interpersonal relationships need to be considered as part of routine care and should be reviewed with patients throughout the treatment journey.