Proton Pump Inhibitor Use in Older Adult Patients with Multiple Chronic Conditions: Clinical Risks and Best Practices

Background and objectives: Life expectancies have increased globally, including in Romania, leading to an aging population and thus increasing the burden of chronic diseases. Over 80% of individuals over 65 have more than three chronic conditions, with many exceeding ten and often requiring multiple medications and supplements. This widespread polypharmacy raises concerns about drug interactions, side effects, and inappropriate prescribing. This review examines the impact of polypharmacy in older adult patients, focusing on the physiological changes affecting drug metabolism and the potential risks associated with excessive medication use. Special attention is given to proton pump inhibitors (PPIs), a commonly prescribed drug class with significant benefits but also risks when misused. The aging process alters drug absorption and metabolism, necessitating careful prescription evaluation. Methods: We conducted literature research on polypharmacy and PPIs usage in the older adult population and the risk associated with this practice, synthesizing 217 articles within this narrative review. Results: The overuse of medications, including PPIs, may lead to adverse effects and increased health risks. Clinical tools such as the Beers criteria, the STOPP/START Criteria, and the FORTA list offer structured guidance for optimizing pharmacological treatments while minimizing harm. Despite PPIs’ well-documented safety and efficacy, inappropriate long-term use has raised concerns in the medical community. Efforts are being made internationally to regulate their consumption and reduce the associated risks. Conclusions: Physicians across all specialties must assess the risk–benefit balance when prescribing medications to older adult patients. A personalized treatment approach, supported by evidence-based prescribing tools, is essential to ensure safe and effective pharmacotherapy. Addressing inappropriate PPI use is a priority to prevent potential health complications.