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Drug Innovation and Development Cycle

Nagashree Kotturi,Phani Kotturi

Drug discovery and development initiates with identification of lead molecules targeted for a treating a particular disease. The identified lead compound which is termed a new chemical entity is subjected todrug development process. Drug development process involves different stages like

1) Pre-Clinical Testing

2) Phase I Clinical Trials

3) Phase II Clinical Trials

4) Phase III Clinical Trials

5) New Drug Application (NDA) / Biologics License Application (BLA)

6) Phase IV or post marketing surveillance.