![]() The caffeine content varies from 50 mg to 500 mg per bottle . Herbs, ginseng, and riboflavin are found in energy drinks such as Red Bull and Monster . However, complications including insomnia, jitters, nervousness, high blood pressure, elevated heart rate, coronary artery spasm, coronary artery dissection, prolonged QT interval, and supraventricular arrhythmia can occur . Few case reports provide evidence of AF, though a case of supraventricular tachycardia was reported in a 23-year-old woman without any cardiac medical history the mechanism of this phenomenon is yet to be understood . ![]() According to self-repot surveys conducted by Seifert et al. , 30%-50% of adolescents and young adults consume energy drinks. An EKG and echocardiogram were repeated on the follow-up, which were normal.Įnergy drinks are advertised across the world and are popular among young adults. The patient was advised follow up after one month. Spontaneous resolution of the AF occurred during the observation. The patient was admitted for further evaluation of his AF. Urine toxicology was sent, which revealed no toxic substance. Echocardiogram showed a structurally normal heart with an ejection fraction of 55%. Work-ups for thyroid functions and serum electrolytes (potassium, sodium, calcium, phosphate, and magnesium) were performed, the results of which were normal. An electrocardiogram (EKG) was obtained that showed AF with rapid ventricular response (Figure 1). On examination, the patient appeared restless, with a heart rate in the 150s, a heartbeat that was irregular without murmurs, rubs, or gallops, and a blood pressure of 115/80 mmHg. The caffeine and taurine content of the drink was 111 mg. However, after an hour, he started feeling short of breath and restless and vomited. Initially, on consuming the drink, the patient felt energetic and alert. ![]() He had consumed two energy drinks prior to his semester examination that day. A 22-year-old male student with no significant past medical or family history presented to the emergency department (ED) early in the morning with complaints of shortness of breath.
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