The Vagarious amount of caffeine may become harmful in frequent use, it increased among medical interns in Makkah region. The caffeine becomes a daily routine for medical interns without attention for their side harmful effect. The purpose of our study was to evaluate the educational level of awareness of the harmful effect of caffeine consumption. This was a cross-sectional study from August to October 2016. A total number 437 of participants with GPA groups, Group I (GPA 1.5-2), Group II (GPA 2.1- 3) and Group III (GPA 3.1- 3.5). The higher percentages were the group II and female consumed caffeine frequently more than male.
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