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Caffeine

What is caffeine?

Caffeine is a bitter substance that occurs naturally in more than 60 plants including:

  • Coffee beans
  • Tea leaves
  • Kola nuts, which are used to flavor soft drink colas
  • Cacao pods, which are used to make chocolate products

There is also synthetic (man-made) caffeine, which is added to some medicines, foods, and drinks. For example, some pain relievers, cold medicines, and over-the-counter medicines for alertness contain synthetic caffeine. So do energy drinks and "energy-boosting" gums and snacks.

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Results 1 - 10 of 585 for Caffeine
  1. Caffeine (National Library of Medicine)  
    What is caffeine? Caffeine is a bitter substance that occurs naturally in more than 60 plants including: Coffee beans Tea leaves Kola nuts, ... chocolate products There is also synthetic (man-made) caffeine, which is added to some medicines, foods, and ...
    https://medlineplus.gov/caffeine.html - Health Topics
  2. Caffeine in the diet 
    Caffeine is a substance that is found in certain plants. It can also be man-made and ... Caffeine is absorbed and passes quickly into the brain. It does not collect in the bloodstream or ...
    https://medlineplus.gov/ency/article/002445.htm - Medical Encyclopedia
  3. Acetaminophen, Butalbital, and Caffeine 
    Acetaminophen, butalbital, and caffeine is used to relieve tension headaches. Acetaminophen is in a class of medications called analgesics (pain relievers). It works ...
    https://medlineplus.gov/druginfo/meds/a601009.html - Drugs and Supplements
  4. Ergotamine and Caffeine 
    The combination of ergotamine and caffeine is used to prevent and treat migraine headaches. Ergotamine is in a class of medications called ergot alkaloids. It works together ...
    https://medlineplus.gov/druginfo/meds/a601048.html - Drugs and Supplements
  5. Caffeine overdose 
    Caffeine is a substance that exists naturally in certain plants. It can also be man-made and ... is a diuretic, which means it increases urination. Caffeine overdose occurs when someone takes in more than ...
    https://medlineplus.gov/ency/article/002579.htm - Medical Encyclopedia
  6. Spilling the Beans: How Much Caffeine is Too Much? (Food and Drug Administration)  
    Caffeine/Start Here ... Caffeine ... Food and Drug Administration ... Caffeine can be part of a healthy diet for most people, but too much caffeine may pose a danger ...
    https://www.fda.gov/.../spilling-beans-how-much-caffeine-too-much - External Health Links
  7. Caffeine (For Parents) (Nemours Foundation)  
    caffeine, too much caffeine, drinking too much caffeine, caffeinated beverages, caffeinated drinks, caffeinated sodas, caffeinated soft drinks, ...
    https://kidshealth.org/en/parents/child-caffeine.html - External Health Links
  8. Aspirin, Butalbital, and Caffeine 
    The combination of aspirin, butalbital, and caffeine comes as a capsule and tablet to take by mouth. It usually is taken every 4 hours as needed. Follow the directions ...
    https://medlineplus.gov/druginfo/meds/a601023.html - Drugs and Supplements
  9. Tired or Wired? Caffeine and Your Brain From the National Institutes of Health (National Institutes of Health)  
    Caffeine can make you feel awake and alert. But what else might this chemical be doing to ...
    https://newsinhealth.nih.gov/2020/10/tired-or-wired - External Health Links
  10. Effects of Mixing Alcohol and Caffeine (Centers for Disease Control and Prevention)  
    How mixing caffeine and alcohol can increase health risks and ways to prevent these harms.
    https://www.cdc.gov/alcohol/about-alcohol-use/alcohol-caffeine.html - External Health Links
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