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Related Concept Videos

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Stimulants

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Active Transport01:14

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Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions
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Published on: October 2, 2018

Do energy drinks contain active components other than caffeine?

Tom M McLellan1, Harris R Lieberman

  • 1TM McLellan Research Inc., Stouffville, Ontario, Canada.

Nutrition Reviews
|December 5, 2012
PubMed
Summary
This summary is machine-generated.

Energy drinks (EDs) provide caffeine, which can enhance performance. However, scientific evidence does not support claims that other ED ingredients, like taurine or ginseng, improve physical or cognitive function.

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Area of Science:

  • Sports Science
  • Nutritional Science
  • Pharmacology

Background:

  • Energy drinks (EDs) are popular beverages containing caffeine and various other compounds.
  • Claims suggest EDs enhance physical and cognitive performance beyond caffeine's effects.
  • The specific contributions of non-caffeine ED ingredients remain unclear.

Purpose of the Study:

  • To systematically evaluate the scientific evidence for performance-enhancing effects of ED ingredients other than caffeine.
  • To determine if components like taurine, ginseng, or B-vitamins contribute to physical or cognitive improvements.

Main Methods:

  • A comprehensive literature search was conducted across PubMed, Psych Info, and Google Scholar.
  • 32 articles examining the effects of ED ingredients alone or with caffeine were systematically reviewed.
  • Evidence-based findings were evaluated for their support of performance enhancement claims.

Main Results:

  • Overwhelming lack of evidence supports performance-enhancing claims for ED components other than caffeine.
  • Weak evidence suggests potential minor benefits from glucose and guarana extract.
  • Caffeine content in EDs aligns with doses known to improve cognitive and physical performance.

Conclusions:

  • Current evidence does not substantiate claims that non-caffeine ingredients in energy drinks enhance performance.
  • Additional rigorous, randomized, placebo-controlled studies are necessary to validate product claims.
  • Caffeine is the primary driver of performance effects associated with energy drinks.