The economics of medicines optimization: policy developments, remaining challenges and research priorities

BACKGROUND: This review scopes the evidence on the effectiveness and cost-effectiveness of interventions to improve suboptimal use of medicines in order to determine the evidence gaps and help inform research priorities. SOURCES OF DATA: Systematic searches of the National Health Service (NHS) Economic Evaluation Database, the Cochrane Database of Systematic Reviews and the Database of Abstracts of Reviews of Effects. AREAS OF AGREEMENT: The majority of the studies evaluated interventions to improve adherence, inappropriate prescribing and prescribing errors. AREAS OF CONTROVERSY: Interventions tend to be specific to a particular stage of the pathway and/or to a particular disease and have mostly been evaluated for their effect on intermediate or process outcomes. GROWING POINTS: Medicines optimization offers an opportunity to improve health outcomes and efficiency of healthcare. AREAS TIMELY FOR DEVELOPING RESEARCH: The available evidence is insufficient to assess the effectiveness and cost-effectiveness of interventions to address suboptimal medicine use in the UK NHS. Decision modelling, evidence synthesis and elicitation have the potential to address the evidence gaps and help prioritize research.