![]() A dose of 500 mg or 600 mg of caffeine can affect you much like a low dose of an amphetamine. Higher doses can have much more potent effects. A normal dose of caffeine is about 50 mg to 200 mg.Ĭaffeine works best when you take it on an intermittent, off-and-on basis. It can have a positive effect on your reaction times, mood and mental performance. ![]() These effects depend on the amount of caffeine you consume and when you consume it: Positive Effects of CaffeineĬaffeine is considered a moderately effective alerting agent. But it is still only half of the caffeine consumption in heavy tea-drinking countries such as England and Sweden.Ĭaffeine is a product that has both positive and negative effects. This is about three times higher than the world average. The average daily consumption of caffeine by adults in the U.S. On any given day, about 85% of Americans use caffeine products. The remaining caffeine can stay in your body for a long time.Ĭoffee accounts for 54% of the caffeine consumption in the world. The half-life is the time it takes for your body to eliminate half of the drug. ![]() It reaches a peak level in your blood within 30 to 60 minutes. Caffeine blocks the adenosine receptor to keep you from feeling sleepy.Ĭaffeine begins to affect your body very quickly. ![]() These drugs are called “stimulants.” Caffeine acts as an “adenosine receptor antagonist.” Adenosine is a substance in your body that promotes sleepiness. It also can be produced synthetically.Ĭaffeine is a type of drug that promotes alertness. Natural sources of caffeine include coffee beans, tea leaves and cocoa beans.
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