The Role of Regulatory Affairs in Lifecycle Management of Generic Drugs

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Prof. (Dr) MSR Prasad,

K L E F Deemed To Be University

Green Fields, Vaddeswaram, Andhra Pradesh 522302, India

email2msr@gmail.com

Abstract
The lifecycle management of generic drugs encompasses the continuum of activities from initial regulatory submission through post-marketing surveillance, product variation, and eventual discontinuation. Regulatory affairs (RA) professionals serve as strategic linchpins, interpreting evolving guidelines, coordinating cross-functional teams, and ensuring that generics meet the rigorous quality, safety, and efficacy standards established for innovator products. Their responsibilities begin with dossier compilation—integrating chemistry, manufacturing, controls (CMC), and bioequivalence data—and extend into proactive variation planning, signal detection in pharmacovigilance, labeling maintenance, and regulatory intelligence monitoring. This manuscript examines the multifaceted functions of regulatory affairs in the generic drug landscape, emphasizing the critical role they play in accelerating market access, optimizing resource allocation, and safeguarding patient safety.A mixed-methods approach was employed. First, a comprehensive document review of FDA, EMA, and ICH guidelines mapped key lifecycle activities. Second, semi-structured interviews with eight RA leaders at multinational generic manufacturers provided experiential insights into strategic decision-making. Third, quantitative analysis of 50 generic approvals (2018–2022) assessed approval and variation timelines, with descriptive statistics presented in Table 1. Finally, Monte Carlo simulations modeled two regulatory strategies—reactive versus proactive variation planning—to predict impacts on time to market, variation backlog, and resource utilization.

Keywords
Regulatory affairs, lifecycle management, generic drugs, bioequivalence, pharmacovigilance

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