Table 2. Adverse Events Reported
Adverse EventEnergy Drink (n=18), No. (%)Caffeine (n=18), No. (%)
Any side effect15 (83)13 (72)
Anxiety3 (17)5 (28)
Difficulty in falling asleep4 (22)2 (11)
Dizziness3 (17)2 (11)
Dyspepsia/upset stomach4 (22)3 (17)
Epistaxis1 (6)1 (6)
Headache2 (11)3 (17)
Jitteriness8 (50)6 (33)
Nausea2 (11)0 (0)
Palpitations4 (22)0 (0)
Shortness of breath1 (6)1 (6)