According to a comprehensive view on the safety of ingested caffeine, the thresholds for caffeine toxicity in various age groups are as follows:
Healthy adults (aged ≥ 19 years): 400 mg/d
Healthy adolescents (aged 12-18 years): 100 mg/d
Healthy children (aged < 12 years): 2.5 mg/d
In the United States, the average daily intake is about 180 mg/d, which is the amount of caffeine in up to two cups of coffee.
Read more about caffeine toxicity.
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Any views expressed above are the author's own and do not necessarily reflect the views of WebMD or Medscape.
Cite this: Mary L. Windle. Fast Five Quiz: Caffeine Facts vs Fiction - Medscape - Sep 04, 2019.
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