To identify and prioritise the most appropriate (de)prescribing interventions in inpatient and outpatient hospital care to advance environmentally sustainable healthcare.

A modified RAND Delphi study.

Inpatient and outpatient hospital care in the Netherlands.

The Delphi panel consisted of 63 participants, comprising 36 physicians and 27 pharmacists working in Dutch hospitals.

Consensus on the appropriateness of (de)prescribing interventions for frequently used medications in inpatient and outpatient hospital care to advance environmentally sustainable healthcare and the prioritisation of interventions per care setting (inpatient/outpatient) and intervention type (deprescribing/sustainable dosage form), culminating in a top 20.

51 (de)prescribing interventions were identified for 18 medication classes, for which consensus on appropriateness was reached for 42 (82%). The top 20 highest ranked interventions were identified, starting with switching from intravenous to oral administration of paracetamol, stopping chronically used proton pump inhibitors without indication and initiating antibiotics orally in case of good bioavailability.

Most (de)prescribing interventions were considered appropriate for advancing sustainable medication use, highlighting support for their potential implementation to reduce the environmental burden of healthcare.