Pharmacist interventions in medication adherence in patients with mental health disorders: a scoping review

Objective Mental health patients struggle with medication adherence, providing opportunities for pharmacists to have a critical role in implementing key interventions for this patient cohort. This scoping review aimed to identify and evaluate evidence of pharmacists' involvement in medication adherence interventions in mental health patients. Methods Three databases were searched from January 2013 to August 2022: PubMed, Embase and CINAHL. The first author independently performed screening and data extraction. Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for Scoping Reviews (PRISMA-ScR) was utilized to report this review. Themes related to the pharmacist's role in improving medication adherence for mental health patients were identified and the strengths and weaknesses of these studies were evaluated. Key Findings A total of 3476 studies were identified and 11 studies met the selection criteria. Study types included retrospective cohort studies, quality improvement projects, observational studies, impact studies, service evaluations and longitudinal studies. Pharmacists worked primarily in community pharmacies, hospitals, or interdisciplinary mental health clinics, and improved medication adherence within these settings, at transitions of care, and by utilizing digital health. The patient perspective was valuable in identifying barriers and enablers to medication adherence. Pharmacists had varying levels of education and training, with studies highlighting the importance of completing extended training programs and partaking in expanded roles such as pharmacist prescribing. Conclusions This review highlighted the need for expanded pharmacist roles within multidisciplinary mental health clinics and further training in psychiatric pharmacotherapy, to aid pharmacists in confidently improving medication adherence for mental health patients.