The Pharmacoepidemiology principles coupled with statistical mechanical concepts and readily available drugs and the clinical experiments on human beings. Epidemiology studies the causes and effects of diseases and its effects in a defined population. Pharmacoepidemiology thus plays a crucial role in maintaining safe public health policies which is essential for effective decision making the scope of the experimental developments is also enhanced through the increased use of complementary data. So as to ensure a coherent and complete picture of the microscopic fluid structure and macroscopic phase behavior.