Background and objectives: This study was carried out to determine the most commonly used drugs in health centers. By identifying common medications, pharmacological educational needs of nurses gets clear and officials can provide nurses specific relevant training about common drugs.

Material and Methods: In this descriptive report, the hospitals’ pharmacies were asked to name ten of the most widely used drugs in the past 6 months. The obtained data were analyzed by SPSS 13 software using descriptive tests.

Results: Gastrointestinal drugs and antibiotics in all centers and oxytocin in obstetrics and gynecological centers were the most commonly used drugs.

Conclusion: Due to the important and dangerous side-effects of these common medications, renewing nurses’ information in this field is required.
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