The aim of this study was to evaluate case histories of patients admitted and also to highlight the role of pharmacist at ward level in Hayat Abad Medical Complex (HMC), Peshawar. A standard questionnaire was designed and thirty case histories of different diseases in medical ward were collected. The percentage incidence of different diseases like, diabetes mellitus (6.7%), respiratory tract infection (13.3%), chronic obstructive pulmonary disease (COPD) (16.6%) and hypertension (6.7%) were documented, in which percentage incidence of malaria (16.7%) was higher from the rest of diseases. The drugs which have observed for numerous drug interactions were steroidal drugs, warfarin, PPI’s, benzodiazepines, NSAID’s, furosemide and anti T.B drugs. The most frequently recorded intervention was additive type (80%). In order to eliminate such undesired accomplishments clinical pharmacist services must be brought at ward level in health care system.