This study explores the impact of pharmacy-based immunization services on expanding access to vaccinations and enhancing public health outcomes. With a growing emphasis on preventive care, pharmacists have increasingly assumed a crucial role in administering vaccines, thereby contributing to the broader public health framework. This research assesses the effectiveness of such services in reaching underserved populations and improving vaccination rates across diverse communities. By conducting a comprehensive review of existing literature, we evaluate the scope, benefits, and challenges associated with pharmacy-based immunization initiatives. The findings underscore the significant positive impact of these services, emphasizing their role in increasing convenience, reducing barriers to access, and promoting timely vaccinations. Furthermore, the study investigates the economic implications and costeffectiveness of integrating immunization services within pharmacies, shedding light on potential financial savings for both individuals and healthcare systems. Additionally, the research discusses the importance of pharmacist education and training to ensure the safe and effective delivery of immunizations, highlighting the need for ongoing professional development in this evolving landscape. Ultimately, this study contributes to the evidence base supporting the expansion of pharmacy-based immunization services as a strategic and accessible approach to bolstering public health, particularly in the context of evolving healthcare delivery models and the global imperative for vaccination coverage.