Actuality. Within the past years energy drinks are becoming more and more popular in Ukraine among young people. But not everyone precisely knows which of them are useful, relatively edible or even dangerous for one’s health. Objective. Investigation of the prevalence of the energy drinks consumption among medical students and the impact on the physiological processes. Methods. The following method were used: questioning, sanitary examination, hygienic experiment, and statistical methods. Results. Every third respondent consumes energy drinks actively, and 12 % of them uses such drinks every day. Consumption of these drinks takes toll on the organism physiological processes and adaptive capacity, causes adverse reactions in cardio-vascular and digestive systems. Conclusion. Consumption of energy drinks causes risk factors for health. Key Words: energy drinks, risk factor for health, adaptive capacity.