![]() ![]() One caffeinated beverage is defined as any of the following: six ounces of cold or hot coffee or tea, twelve ounces of soda with caffeine, or one energy drink. In 1911, Coke had 80 mg of caffeine in an 8-oz serving, which is the caffeine content of a modern Red Bull. For example, an 8.4-ounce can of Red Bull has 7680 mg of caffeine, compared to 95200 mg in a typical cup of coffee. Inclusion Criteria: Subjects must be age 18 years or older who consume no more than five caffeinated beverages and products per day. Energy drinks have less caffeine than an old-fashioned cup of black coffee. Other: Regular "5-hour Energy" Other: Decaf "5-hour Energy" Other: Compounded concentrated caffeine liquid Other: Flavored bottled water ![]() Condition or diseaseįocus: to Compare a Commercially Available Energy Drink, B Vitamins, Caffeine Alone, and Placebo for Effectiveness on Perceived Energy Level and Wakefulness The purpose of this randomized, double-blind, placebo controlled, four way crossover study is to evaluate the efficacy of "5-hour Energy"®, "5-Hour Energy Decaf"®, caffeine, and placebo for perceived energy and wakefulness. It is suspected that the efficacy related to these products is due to the caffeine content, which was reported as 138 mg per 2-ounce bottle in an online caffeine content chart. The definitive efficacy and potency of the products is unknown due to the lack of evidence-based clinical reports. The appeal of these products involves ease of use, low caloric value, and the absence of sugar to prevent a "crash" later in the day. The line of "5-hour Energy"® products are available over-the-counter as energy supplements. ![]() Why Should I Register and Submit Results?. ![]()
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