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This review delves into the underlying mechanisms of fluorescence quenching, including static and dynamic quenching, F\u00f6rster resonance energy transfer (FRET), and photoinduced electron transfer (PET). Each mechanism offers unique insights into molecular interactions, binding affinities, and conformational changes of drug candidates, enabling researchers to dissect complex biological systems with precision. The application of fluorescence quenching in high\u2010throughput screening (HTS) is particularly emphasized, highlighting its role in identifying lead compounds and optimizing drug\u2013target interactions. Furthermore, the review explores the integration of advanced fluorescence techniques, such as time\u2010resolved fluorescence and single\u2010molecule spectroscopy, in elucidating the quenching phenomena at a molecular level. These techniques provide a deeper understanding of drug\u2013receptor interactions, allosteric modulation, and protein dynamics, which are pivotal in the drug development pipeline. The potential of fluorescence quenching in probing the pharmacokinetics and pharmacodynamics of novel therapeutics is also discussed, underscoring its versatility and effectiveness. By offering a comprehensive analysis of fluorescence quenching mechanisms and their applications, this review aims to inform future drug discovery endeavors, fostering the development of more effective and targeted therapies.<\/jats:p>","DOI":"10.1002\/bio.70168","type":"journal-article","created":{"date-parts":[[2025,4,11]],"date-time":"2025-04-11T05:13:08Z","timestamp":1744348388000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Spectroscopic Visualization of Drug\u2013Biomolecules Interactions: An Insight to Fluorescence Quenching as Tool in Drug Discovery"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6354-9525","authenticated-orcid":false,"given":"Vivek","family":"Pandey","sequence":"first","affiliation":[{"name":"Department of Chemistry School for Chemical Engineering and Physical Sciences Lovely Professional University Phagwara  Punjab 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