Barriers and facilitators to deprescribing in primary care: a systematic review

Background Managing polypharmacy is a challenge for healthcare systems globally. It is also a health inequality concern as it can expose some of the most vulnerable in society to unnecessary medications and adverse drug-related events. Care for most patients with multimorbidity and polypharmacy occurs in primary care. Safe deprescribing interventions can reduce exposure to inappropriate polypharmacy. However, these are not fully accepted or routinely implemented. Aim To identify barriers and facilitators to safe deprescribing interventions for adults with multimorbidity and polypharmacy in primary care. Design and setting Systematic review of studies published from 2000, examining safe deprescribing interventions for adults with multimorbidity and polypharmacy (PROSPERO: CRD42019121848). Method A search of electronic databases: Medline, Embase, CINHAL, Cochrane and HMIC (26.02.19) using an agreed search strategy; supplemented by handsearching of relevant journals, and screening of reference lists and citations of included studies. Results Forty studies from 14 countries were identified. Cultural and organisational barriers included a culture of diagnosis and prescribing; evidence-based guidance focused on single diseases; a lack of evidence-based guidance for the care of older people with multimorbidities; and a lack of shared communication, decision-making systems, tools and resources. Interpersonal and individual-level barriers included professional etiquette; fragmented care; prescribers’ and patients’ uncertainties; and gaps in tailored support. Facilitators included prudent prescribing; greater availability and acceptability of non-pharmacological alternatives; resources; improved communication, collaboration, knowledge and understanding; patient-centred care; and shared decision-making. Conclusion A whole systems patient-centred approach to safe deprescribing interventions is required, involving key decision-makers, healthcare professionals, patients and carer