Study was designed to identify the role of medical representatives in prescription writing habit of the physicians. Identifying the source of information of ADR and to identify the role of hospital pharmacy in the prescription writing habit were secondary objectives of the study. This study is important for Medical Representatives because it gives them the knowledge bout the factors which influences the prescription writing habit. This study mainly focuses on analysis of physicians__ampersandsignrsquo; prescription writing behaviour. This analysis would help companies to understand physicians__ampersandsignrsquo; mindset and to target company__ampersandsignrsquo;s marketing efforts precisely. A questionnaire designed with open and close ended questions to collect information against the framed objectives. A market research software (statistics calculator) was used to determine sample size from the population. Convenient sampling process was followed. Government hospitals, private hospitals, private clinics, medical college from , Udupi, Mangalore and nearby area. Collected data was analyzed by using percentage analysis method to derive results.