Clinical Pharmacists vs. Antimicrobial Resistance: Evidence-Based Strategies and Stewardship Impact in Modern Healthcare: A Review

Background: Antimicrobial resistance (AMR) has been a significant problem to human health as antibiotics are misused and overused. Due to antimicrobial stewardship programs (ASPs), the emergence of antimicrobial resistance is hindering the performance of healthcare systems, and clinical pharmacists have become a necessity in these programs. Objectives: This review discusses the changing role of clinical pharmacists in the fight against AMR through evidence-based methods. Methods: Various strategies were reviewed including drug optimization, de-escalation, intravenous-to-oral conversions, therapeutic drug monitoring, and educating prescribers. The role of clinical pharmacists as part of multidisciplinary teams performing evidence-based interventions in real-time was emphasized. Results: Intervention by pharmacists has been shown to significantly reduce inappropriate antibiotic use, hospital-acquired infections, resistance patterns, and healthcare expenditures, while improving patient outcomes and compliance with stewardship procedures. Additionally, their role in surveillance, audit-feedback systems, and policy development enhances the clinical effectiveness of ASPs in both hospital and community-based settings. Conclusion: Challenges to the implementation of clinical pharmacist-led ASP initiatives such as limited resources, interprofessional barriers, and specialized training still exist. Nonetheless, the strategic integration of clinical pharmacist initiatives into ASPs is possibly the sustainable path forward to maintaining optimal antibiotic efficacy. This review emphasizes the importance of expanding pharmacist roles, promoting ongoing training, and promoting interprofessional collaboration to mitigate the global threat posed by AMR. Keywords: Clinical pharmacists, Antimicrobial resistance (AMR), Antimicrobial stewardship (AMS), Evidence-based interventions, Drug optimization, Healthcare-associated infections