• Diksha Gupta
• Swara Suryarao
• Dr. Rajesh Oswal
• Harshraj Suryawanshi
• Ujjwala kumari

Drug discovery is the process aimed at identifying therapeutically useful compounds for the cure and treatment of disease. This process includes candidate identification, synthesis, characterization, validation, optimization, screening, and testing of therapeutic efficacy. Once these studies demonstrate the compound's importance, the drug development process begins prior to clinical trials. The drug development process must go through several stages to produce a drug that is safe, effective and meets all regulatory requirements. A common theme of our articles is that the process is so lengthy, complex and expensive that many biological targets need to be considered for any new drug that will ultimately be approved for clinical use. New research tools may need to be evaluated to explore new targets. The journey from initial discovery to marketed drug is a long and arduous task. From discovery to approved drug takes about 12 to 15 years and requires an investment of about $1 billion. On average, one million molecules are screened, but he only one will be investigated in late-stage clinical trials and ultimately delivered to patients. This article provides a brief overview of the processes involved in drug discovery and development.

Clinical Trials, Lead optimization, New Drug Application, Preclinical research.

"“Drug Development: Stages of Drug Discovery And Development Process” ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 8, page no.f739-f746, August-2022, Available :http://www.jetir.org/papers/JETIR2208578.pdf

"“Drug Development: Stages of Drug Discovery And Development Process” ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 8, page no. ppf739-f746, August-2022, Available at : http://www.jetir.org/papers/JETIR2208578.pdf