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  2. Paraxanthine - Wikipedia

    en.wikipedia.org/wiki/Paraxanthine

    Studies indicate that, similar to caffeine, simultaneous antagonism of adenosine receptors [9] is responsible for paraxanthine's stimulatory effects. Paraxanthine adenosine receptor binding affinity (21 μM for A1, 32 μM for A2 A, 4.5 μM for A2 B, and >100 for μM for A3) is similar or slightly stronger than caffeine, but weaker than theophylline.

  3. List of energy drinks - Wikipedia

    en.wikipedia.org/wiki/List_of_energy_drinks

    Caffeine (mg/litre) Caffeine (mg/US fl oz) Caffeine per serving (quantity) Additional notes 5-hour Energy: 3,504 104 200 mg (1.93 fl oz or 57.1 mL) AMP Energy (UK) 310 9.17 155 mg (500 mL) Released in the UK in 2013 under the Mountain Dew brand and was only available in 500 mL cans. It contained a higher caffeine content compared to Mountain ...

  4. What does pre-workout do and is it really effective? Know the ...

    www.aol.com/lifestyle/does-pre-workout-really...

    Pre-workout may contain vitamins, creatine and caffeine. Is it worth trying?

  5. Caffeine - Wikipedia

    en.wikipedia.org/wiki/Caffeine

    High caffeine consumption in energy drinks (at least one liter or 320 mg of caffeine) was associated with short-term cardiovascular side effects including hypertension, prolonged QT interval, and heart palpitations. These cardiovascular side effects were not seen with smaller amounts of caffeine consumption in energy drinks (less than 200 mg). [79]

  6. Health effects of coffee - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_coffee

    The health effects of coffee include various possible health benefits and health risks. [ 1 ] A 2017 umbrella review of meta-analyses found that drinking coffee is generally safe within usual levels of intake and is more likely to improve health outcomes than to cause harm at doses of 3 or 4 cups of coffee daily.

  7. Caffeinated drink - Wikipedia

    en.wikipedia.org/wiki/Caffeinated_drink

    Caffeine can cause a physical dependence, if consumed in excessive amounts. [3] The need for caffeine can be identified when individuals feel headaches, fatigue and muscle pain 24 hours after their last energy drink. [4] Some commercially distributed drinks contain guarana, a South American berry with a caffeine content about twice that of ...

  8. ECA stack - Wikipedia

    en.wikipedia.org/wiki/ECA_stack

    In January 2002, Health Canada issued a voluntary recall of all ephedrine products containing more than 8 mg per dose, all combinations of ephedrine with other stimulants such as caffeine, and all ephedrine products marketed for weight-loss or bodybuilding indications, citing a serious risk to health. [2]

  9. Caffeine use for sport - Wikipedia

    en.wikipedia.org/wiki/Caffeine_use_for_sport

    The benefits caffeine provides influences the performance of both endurance athletes and anaerobic athletes. Caffeine has been proven to be effective in enhancing performance. Caffeine is a stimulant drug. [1] Once consumed, it is absorbed in the stomach and small intestine as well as being circulated throughout the body. [2]

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