RESUMO
Hippocratic Oath is a living document for ethical conduct of the physicians around the world. World Medical Association has been amending the oath as per the contemporary times. Although physicians maintain their ethical standards while treating a patient yet many a times social, administrative and ruling powers either use physicians as their tool of oppression or victimize them for conducting duties as per their oath. The Tuskegee Syphilis Study and Human Radiation Experiments in America, Nazi Experiments in Germany and compulsory sterilization program in India were the studies where States used physicians for the advancement of their rationality or belief. Conversely victimization of physicians in Kosovo, Sri Lanka and incarcerating physicians for treating human immunodeficiency virus/acquired immunodeficiency syndrome patients in some countries is concerning. The Nuremberg code, the Declaration of Geneva, Belmont Report and Declaration of Helsinki are ethical documents while active involvement of Food and Drug Administration through "common rule" resulted in guidelines like International Conference on Harmonization and Good Clinical Practices. Still unethical studies are found in developing countries. Studies such as experimental anticancer drugs in 24 cancer patients without adequate prior animal testing and informed consent in Kerala, studies at All India Institute of Medical Sciences in New Delhi resulted in 49 deaths of children and many more suspicious studies are rampant. Reverting back to the fundamentals of the medical profession; teaching medical ethics and enforcement of "medical neutrality" by embarking some grade of "medical immunity" on the basis of the oath is necessary for ethical conduct of physicians.