Q:

How long does caffeine take to leave your body?

A:

Quick Answer

According to Caffeine Informer, caffeine has a half-life that can range from 2.5 to 4.5 hours. Half-life is affected by various factors, including age, mental conditions and prescription drug use.

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How long does caffeine take to leave your body?
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Full Answer

Caffeine Informer explains that the metabolization process begins as soon as caffeine is ingested, and all but 1 percent is absorbed within the first 45 minutes.

DotFit states that caffeine should not have any significant effect after its half-life, but trace amounts may remain in the body for up to one day. Individual differences in metabolic rate have a significant effect on how long you feel the effects of caffeine.

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