Energy Drink

An energy drink can serve as a refreshing beverage choice. An energy drink has a pick-me-up quality through a combination of caffeine, vitamins, and herbal supplements contained in the drink. Several studies have shown that energy drinks may enhance mental performance and alertness, due to caffeine and other supplements added to the drink. The caffeine content of energy drinks varies according to the brand. As a comparison, energy drinks typically contain half the caffeine found in regular coffeehouse coffee. Generally, an energy drink includes methylxanthines, vitamin B and herbs. Other common ingredients are guarana, acai, and taurine, plus various forms of ginseng, maltodextrin, carbonated water, inositol, carnitine, creatine, glucuronolactone, and ginkgo biloba. Some contain high levels of sugar, while other brands offer artificially sweetened 'diet' versions. Due to their ingredients, energy drinks have a variety of physiological and psychological effects, improving mental and cognitive performances as well as an increase in subjective alertness.

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