Nutrition

Caffeine

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Caffeine

  • Preparations
  • Relative Caffeine amounts
  1. 10 mg/serving
    1. Decaffeinated coffee (7 oz, 210 ml)
    2. Milk chocolate (1.5 oz)
  2. 30 mg/serving
    1. Dark chocolate (1.5 oz)
  3. 50 mg/serving
    1. Tea (8 oz, 240 ml)
    2. Caffeinated soda (12 oz, 360 ml)
    3. Coffee ice cream (8 oz, 240 ml)
  4. 100 mg/serving
    1. Coffee (8 oz, 240 ml)
  5. 150 mg/serving
    1. Expresso (2 oz, 60 ml)
  • Precautions
  1. Energy drinks contain high levels of stimulants
    1. Combined Caffeine and Methylxanthines may exceed 500 mg total
    2. Higher risk of toxicity
  2. Limit daily Caffeine below maximum
    1. Adults: 400 mg/day
    2. Teens: 2.5 mg/kg/day (up to 400 mg/day)
  • Pharmacokinetics
  1. Metabolism: Zero order elimination (very slow elimination)
  • Adverse Effects
  1. Anxiety
  2. Jitteriness
  3. Arrhythmia
  4. Insomnia
  5. Toxic Levels
    1. Seizures
    2. Dysrhythmia (e.g. Multifocal Atrial Tachycardia)
  • Resources
  1. FDA News: Investigation into Energy Drinks and Supplements
    1. http://www.fda.gov/Food/NewsEvents/ucm328536.htm
  • References
  1. Nordt in Majoewsky (2012) EM: Rap 12(8): 5