Proton pump inhibitors (PPIs) are indicated for disorders including peptic ulcer disease and gastro-oesophageal reflux disease; however, they are often used for longer and at higher doses than recommended, or for indications that are not supported by evidence.The aim of this article is to outline evidence-based approaches to deprescribing PPIs.PPIs are generally well tolerated; however, use beyond eight weeks is rarely indicated and increases the risk of adverse events. PPI deprescribing should be considered when there is no indication for long-term therapy. Evidence supports a patient-centred approach to PPI deprescribing involving stepping down the dose before ceasing or switching to pro re nata (PRN; 'as needed') use. Abrupt PPI discontinuation may result in short-term rebound acid hypersecretion that can mimic symptom return. This can be minimised with gradual dose tapering prior to discontinuation and managed with PRN treatment. Prescribers should discuss the rationale for PPI deprescribing and involve patients in developing the deprescribing plan.