Drug Repositioning as an Innovative Approach in Pharmaceutical Development

Drug repurposing, also called drug repositioning, has become a new and effective way to find and develop new drugs. It means finding new ways to use existing or already approved drugs that were made for other diseases. It usually takes more than 10 to 15 years and a lot of money to get a drug to market using the traditional drug development process. Many drug candidates also fail during clinical trials because of problems with safety, effectiveness, or toxicity. Drug repurposing is a promising new way to find drugs that can cut down on the cost, time, and risk of traditional drug discovery by a lot. One of the best things about drug repurposing is that researchers can skip some of the early steps in drug development because they already have safety, pharmacokinetics, and toxicity information about existing drugs. Because of this, repurposed drugs can move through clinical trials and regulatory approval processes more quickly. In the last few years, improvements in computational biology, bioinformatics, artificial intelligence, and high-throughput screening technologies have made it much easier to find possible drug candidates for repurposing. Researchers can now more easily look at large biological datasets and guess new drug-target interactions thanks to these modern methods. Numerous successful instances underscore the potential of drug repurposing in contemporary medicine. Sildenafil was first made to treat high blood pressure, but it was later used to treat erectile dysfunction. Thalidomide was first used as a sedative, but it is now used to treat multiple myeloma. Remdesivir has been studied for the treatment of viral infections. Drug repurposing has demonstrated significant potential in the treatment of various diseases, including cancer, infectious diseases, neurological disorders, cardiovascular diseases, and rare genetic conditions. This review article focuses on the concept and importance of drug repositioning in modern pharmaceutical development. It includes a detailed discussion on the introduction and basic concept of drug repositioning, highlighting its significance as an alternative strategy to traditional drug discovery. The review further describes the major types of drug repositioning and the various approaches used for identifying new therapeutic uses of existing drugs. In addition, the advantages and challenges associated with drug repositioning are critically discussed. Finally, the article outlines future perspectives and emerging opportunities in this field, emphasizing the potential of drug repositioning to accelerate drug discovery and improve therapeutic outcomes.