Objectives: Medication Errors can cause serious problems for public health and can be reduced by detecting risk factors, improvement of basic essentials, introduce popular and dangerous errors. The aim of this study was to determine the frequency and type of medication prescribing errors hospital internal wards.

Methods: This study is a descriptive-analytical research. A census sample of 48 physicians from the internal wards of 2 hospitals in Kerman was included in study in 2019. The tools of data were collected by means of a questionnaire including demographic, professional and “medication errors” parts. Data were analyzed by descriptive statistics and the Chi-square statistical test, using SPSS software v.18.

Results: 72.1% of Physician had made medication errors. 54.2%% of samples had made 1-2 errors, and 71.4% of errors had occurred on tele orders. In non-parenteral medications, wrong drug, wrong dosage, drug calculation, wrong route were frequently reported. Physician mentioned that the frequent visits in several wards and different hospitals, lack of time to update pharmacologic knowledge, lack of time and attention, were the main causes of errors. The most frequent parenteral medication errors were errors in miscalculation, miswriting infusion rate, drug dosage form missing, and missing drug-drug interactions.

Conclusions: Based on the result, physician must be noticed on 8 rights principles medication and high frequency of medication prescribing errors particularly in parenterals, considering to education program, reduce physician responsibilities, coordinating with pharmacists are the most influencing factors on reduction of medication errors.