The department of Forensic Medicine and Toxicology was founded in the Post Independence era with teaching, training and research as its main objectives. The Department of Forensic Medicine and Toxicology, Nandha Medical College and Hospital, strives to foster excellence in undergraduate (MBBS) medical curriculum, Ethics & Professionalism and Medical research.  The department is also imparting short-term/Long-term training in Toxicology & DNA.  
The department is training the undergraduate students of MBBS in the subject specialty of Forensic Medicine in the field of Medical Ethics and Professionalism. We teach Medico Legal cases, Medical Ethics, Professional Negligence, Forensic Pathology, Forensic Traumatology, Medical Jurisprudence, Forensic Psychiatry and Medical Toxicology.
Department is imparting expert opinions to cases by the Courts, National Human Rights Commission, CBI, Crime Branch, Tamil Nadu state Police and Investigating agencies from other states.