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Evaluating Quantum And Classical Computing Approaches In Modern Drug Discovery

R. Saniya Paul, Livistone S P, Dr. S. Sheeja

Published Jan 1, 2026• 0 citations
Publisher

Abstract

Drug discovery is inherently complex and expensive with many requisites in terms of precision with respect to interactions\\\' molecular modelling, biological activity prediction and chemical compounds optimisation. Classical computing methods have contributed substantially to the progress of computational drug discovery via molecular simulations, machine learning models and high-throughput virtual screening. However, challenges emerge from the exponentiality of molecular configuration space and the low efficiency of classical algorithms. Quantum computing as a new computing paradigm that offers a novel approach to computation based on various phenomena such as superposition and entanglement and therefore offers a way to overcome the previous limitations. This work presents a comparison of classical and quantum computing approaches in drug discovery with emphasis on their strengths and weaknesses, current progress and future prospects in different aspects of pharmaceutical research.

DOI
10.5281/zenodo.18979548

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Drug discovery is inherently complex and expensive with many requisites in terms of precision with respect to interactions\' molecular modelling, biological activity prediction and chemical compounds optimisation. Classical computing methods have contributed substantially to the progress of computational drug discovery via molecular simulations, machine learning models and high-throughput virtual screening. However, challenges emerge from the exponentiality of molecular configuration space and the low efficiency of classical algorithms. Quantum computing as a new computing paradigm that offers a novel approach to computation based on various phenomena such as superposition and entanglement and therefore offers a way to overcome the previous limitations. This work presents a comparison of classical and quantum computing approaches in drug discovery with emphasis on their strengths and weaknesses, current progress and future prospects in different aspects of pharmaceutical research.
Drug development remains a complex, time-intensive, and costly process, with high failure rates in clinical trials. The advent of quantum computing presents promising opportunities to transform pharmaceutical research and development through enhanced molecular simulations and structure-based drug design. Quantum computing uses quantum mechanical phenomena like superposition and entanglement to process complex molecular interactions more efficiently than classical computers. The integration of quantum computing with machine learning algorithms has enabled more accurate predictions of drug-target interactions and improved virtual screening of compound libraries. Applications include structure-based drug design, molecular docking, lead optimization, and drug repurposing. Notable progress has been made through collaborations between pharmaceutical companies and quantum computing firms, demonstrating practical implementations in drug discovery workflows. However, several challenges persist, including hardware limitations, algorithmic maturity, skilled workforce gaps, and regulatory considerations. The combination of quantum computing with classical computing and machine learning approaches offers a hybrid framework that maximizes the strengths of each technology. As quantum computing technology advances, it is positioned to significantly impact pharmaceutical research and development, potentially reducing development timelines and improving success rates in drug discovery. This review explains the principles, current applications, integration, and limitations of quantum computing in drug development
Quantum computing is currently recognized as a very effective instrument that helps in the advancement of pharma and speeds up the discovery of new drugs. The article discusses several ways in which quantum computing is driving innovation. Quantum mechanical calculations based molecular modeling and simulation techniques can foresee the molecular interactions and behaviors in a much faster ways and can help to identify the new phase of drug candidates. The pharmacophore modeling techniques include the structure based and ligand-based uses quantum computing in the formulation of pharmacophore models that are used in screening of libraries of compounds. Discovery of large databases of bioactive agents has been accelerated with high-throughput virtual screening utilizing quantum computing when determining further development priorities. Artificial intelligence and machine learning programs can take large data sets and determine patterns and correlations that help predict the properties of compounds and their biological activity. Molecular calculations derived from quantum mechanics give better approximations of noncovalent interactions and other quantum entities which are important in drug-target binding. The use of quantum computing to incorporate the methods of molecular dynamics simulations and QSAR analysis is empowering developments in pharmaceutical research. The review also overviews the modern concerns and possible opportunities of using quantum computing for the optimization of the drug discovery and development. All in all, the article presents a contingency of how this new and innovative technology is shaping the field of pharmaceutical research.
The pharmaceutical industry relies heavily on the drug discovery process to develop new medications that can help treat various diseases. This process is highly crucial but also very time-consuming, as it involves screening a massive number of chemical compounds to identify those that can be developed into effective treatments. Traditional computing methods are often inadequate for this task due to the complexity and vastness of the data involved. Quantum computing is an emerging field that has gained significant attention in recent years due to its ability to perform complex computations at a much faster pace than classical computers. Quantum computing uses the principles of quantum mechanics, which differ significantly from classical computing. Drug discovery involves a process of identifying new drugs with the desired biological activity to treat specific diseases. This process can be quite lengthy, time-consuming, and expensive, often taking many years to develop a single drug. However, quantum computing has the potential to revolutionize the drug discovery process. Its ability to perform complex calculations quickly and efficiently could significantly speed up the drug discovery process, making it more cost-effective and accurate. Quantum computing's potential in drug discovery requires further research to fully understand and develop practical applications. The use of quantum computing requires the development of specialized algorithms and software tailored to quantum computing. Further investment in research and development is needed to fully leverage the potential of this technology. This paper explores the potential of quantum computing in drug discovery. We will analyze the benefits of using quantum computing in drug discovery, including faster and more accurate data processing, improved optimization, and more efficient screening of chemical compounds. Our paper will also discuss the challenges and limitations that need to be addressed to fully leverage the potential of quantum computing in drug discovery. This will include discussing potential applications of quantum computing in drug discovery, as well as the need for further investment in research and development to fully realize the potential of this technology. Overall, our paper will provide a comprehensive analysis of the potential of quantum computing in drug discovery, exploring both the benefits and challenges associated with this technology and providing recommendations for future research and development.
The integration of quantum computing in drug discovery has the potential to revolutionize pharmaceutical research by significantly enhancing molecular simulations, drug screening, and optimization processes. Traditional computational methods often struggle with the complexity of molecular interactions, leading to high costs and extended timelines in drug development. Quantum computing, with its ability to process complex calculations exponentially faster than classical computers, offers innovative solutions to these challenges. This chapter explores the fundamentals of quantum computing, its application in pharmaceutical research, and real-world case studies from leading organizations. It also discusses existing challenges, potential solutions, and future directions for adopting quantum computing in drug discovery. By addressing key technical, ethical, and regulatory aspects, this chapter provides a comprehensive analysis of how quantum technologies can accelerate and optimize the drug discovery pipeline.
INTRODUCTION: Quantum computing represents a transformative advancement in computational science, with applications in drug discovery, molecular interaction simulation, drug-target binding optimization, and the analysis of complex biological data at unprecedented speeds and accuracy. Quantum computing emerges as a powerful tool to accelerate the development of new therapeutics, drug design, and the simulation of complex chemical interactions, including personalized medicine strategies. The objective of this study is to explore the potential of quantum computing in drug discovery and development, highlighting its ability to reduce time and costs while accelerating the identification of promising drug candidates. METHODS: Quantum computing algorithms, such as Grover's algorithm and the Variational Quantum Eigensolver (VQE), are utilized to simulate molecular interactions of drugs and optimize drug design. In case studies, such as IBM's use of VQE for molecular simulations, these technologies demonstrate their effectiveness. RESULTS: Quantum computing has shown promise in addressing several technological barriers, such as lengthy development timelines and high costs. Additionally, demonstrated success in molecular simulations and solving challenges during the drug development process. However, challenges related to error rates, qubit coherence, and regulatory compliance remain. DISCUSSION: This study examines the applications of quantum computing in drug discovery, highlighting key techniques such as quantum simulation, quantum machine learning, and optimization algorithms. Quantum computing is crucial for interdisciplinary collaboration among quantum physicists, computational chemists, biologists, and pharmaceutical professionals, as it is essential to overcoming these obstacles and realizing the full potential of quantum technologies in medicine. CONCLUSION: Quantum computing holds great potential in drug discovery and development, offering accelerated, more accurate, and lower-cost research avenues, particularly in complex areas such as protein folding prediction and personalized medicine. This new paradigm has tremendous potential for guiding the future of pharmaceutical development and patient-focused medicine.
Quantum computers are recently being developed in wide varieties, but the computational results from quantum computing have been largely confined to constructing artificial assignments. The applications of quantum computers to real-world problems are still an active area of research. However, challenges arise when the limits of scale and complexity in biological problems are pushed, which has affected drug discovery. The fast-evolving quantum computing technology has transformed the computational capabilities in drug research by searching for solutions for complicated and tedious calculations. Quantum computing (QC) is exponentially more efficient in drug discovery, treatment, and therapeutics, generating profitable business for the pharmaceutical industry. In principle, it can be stated that quantum computing can solve complex problems exponentially faster than classical computing. Here it is needed to mention that QC will not be able to take on every task that classical computers perform—at least not now. It may be classical and quantum-coupled computational technologies combined with machine learning (ML) and artificial intelligence (AI) will solve each task in the future. This review is an overview of quantum computing, which may soon revolutionize the pharmaceutical industry in drug discovery.