Optimising antibiotic exposure by customising the duration of treatment for respiratory tract infections based on patient needs in primary care.

Primary care antimicrobial stewardship programs have limited success in reducing antibiotic use, prompting the search for new strategies. Convincing general practitioners to resist antibiotic prescription amid uncertainty or patient demands usually poses a significant challenge. Despite common practice, standard durations for common infections lack support from clinical studies. Contrary to common belief, extending antibiotic treatment beyond the resolution of symptoms does not seem to prevent or reduce antimicrobial resistance. Shortening the duration of antibiotic therapy has shown to be effective in mitigating the spread of resistance, particularly in cases of pneumonia. Recent hospital randomised trials suggest that ending antibiotic courses by day three for most lower respiratory tract infections is effective and safe. While community studies are scarce, it is likely that these shorter, tailored courses to meet patients' needs would also be effective and safe in primary care. Therefore, primary care studies should investigate the outcomes of advising patients to discontinue antibiotic treatment upon symptom resolution. Implementing patient-centred, customised treatment durations, rather than fixed courses, is crucial for meeting individual patient needs.