![]() ![]() © 2023 Mayo Foundation for Medical Education and Research (MFMER). ![]() Added sugar might provide unwanted added calories. Too much caffeine can increase your heart rate and blood pressure, interrupt your sleep, and cause anxiety. Keep in mind that there might be high amounts of other ingredients in energy drinks, such as herbal stimulants, caffeine or sugar. However, further research is needed and this finding remains controversial, as does the use of taurine in energy drinks. Caffeine increases energy in adults and fights tiredness. Taurine is synthsized from the antioxidant methionine and the amino acid cysteine in the presence of vitamin B6. A single energy drink can have as much as 180 mg of caffeine per serving. Taurine is commonly referred to as a conditionally essential amino acid, meaning the body can produce it naturally, except in certain instances, like during illness and stress. There is about 150 mg of caffeine in 1 cup (250 mL) of brewed coffee. Consuming moderate amounts of caffeine (less than 400 mg a day) is considered safe for adults. Other studies suggest that taurine combined with caffeine improves mental performance. The main ingredient in energy drinks is caffeine. And, in one study, people with congestive heart failure who took taurine supplements three times a day for two weeks showed improvement in their exercise capacity. While research is mixed, some studies suggest that taurine supplementation might improve athletic performance. Taurine is found naturally in meat, fish, dairy products and human milk, and it's also available as a dietary supplement. But little is known about the effects of long-term supplemental taurine use. Taurine is thought to have antioxidant properties. Taurine, which has chemistry similar to other amino acids, is important in several of the body's metabolic processes. ![]()
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