Caffeine impacts everything from sleep quality to concentration and heart rate. Learn how long withdrawal takes, the diuretic effects on the body, and the potential risks of taking caffeine tablets with medication or alcohol.
Caffeine is a chemical primarily found in coffee and tea, but which also appears in various sodas, sports drinks and foods. It is a stimulant, therefore causing changes in metabolism as well as increases in focus and energy. Caffeine is addictive and can cause withdrawal following cessation after frequent use.
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Caffeine is a stimulant that occurs naturally in foods such as coffee, chocolate, tea and kola nuts -- although it is also an additive in some foods, medications and supplements. Caffeine is acidic and bears a bitter taste.
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