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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 529 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 ...
  2. 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 ...
  3. 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 ...
  4. 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 ...
  5. Spilling the Beans: How Much Caffeine is Too Much? (Food and Drug Administration)  
    Caffeine/Start Here ... Caffeine ... Food and Drug Administration ... According to scientists at the FDA, caffeine can be part of a healthy diet for most people, but ...
  6. 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 ...
  7. The combination of acetaminophen, Butalbital, Caffeine comes as a capsule and tablet to take by mouth. It usually is taken every 4 hours as needed. Follow the ...
  8. Caffeine and Migraine (American Migraine Foundation)  
    Caffeine is sometimes a helpful treatment for migraine, but is more often a risk factor. Learn the ...
  9. 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.
  10. Caffeine: How Does It Affect Blood Pressure? (Mayo Foundation for Medical Education and Research)  
    How to Prevent High Blood Pressure/Related Issues ... How to Prevent High Blood Pressure ... Caffeine/Related Issues ... Caffeine ... Mayo Foundation for Medical Education ...
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