| http://www.w3.org/ns/prov#value | - ???Energy drinks contain a variety of substances, and most research suggests that the only active ingredient is caffeine,??? says Dr. Alfred Buxton, Director of the Clinical Electrophysiology Laboratory in the CardioVascular Institute at Beth Israel Deaconess Medical Center. ???Many also contain sugar or other sweeteners, herbal extracts, and amino acids.???
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