Background: Self-medication could be risky behavior and has negative effects. While
Over the Counter (OTC) drugs are available at drugstores, the behavior has become prevalent
among the general population.
Objective: This study aimed at surveying self-medication behavior among medical sciences students
of Shiraz, Iran.
Methods: A sample of 396 students from medical, paramedical, and health sciences disciplines
were included in this cross-sectional study. They were asked to fill a questionnaire about their demographics
and socioeconomic status, medication usage and self-medication in the last six months,
information about the correct use of medication, and information about negative results of selfmedication.
Data were analyzed using chi-square, t-test and logistic regression model using R statistical
Results: Almost 72% of participants reported self-medication in the past sixth months. The main
reasons included trust in their own diagnosis (59.9%), mildness of the disease (56.6%), and having
previous experience about the disease (56%). Cough or cold (84.5%), headache (66.3%), and body
pain (60.2%) were the most frequent diseases that led to self-medication. The majority of the
participants (77.7%) reported they select their medicine on their own decision. Furthermore,
self-medication was highly related to having medicine stock at home (OR=2.692), having less
information about negative results of self-medication (OR=0.835), and more non-syllabus study
Conclusion: Although, medical science students have information about the treatment of illnesses,
they should be more informed about negative results and side-effects of self-medication. They
should also share their knowledge with society to decrease self-medication.