Schedule Y provides requirements and guidelines for permission to import and manufacture new drugs for sale or to undertake clinical trials in India. It outlines the application process and requirements, including pre-clinical data that must be submitted. It describes the responsibilities of sponsors, investigators, and ethics committees for clinical trials. Clinical trials must progress through Phases I-IV and special population studies may be required. Post-marketing surveillance is also addressed. The purpose is to regulate new drugs and ensure clinical research is properly conducted according to good clinical practice standards.