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A 39-year-old member asked:

How much caffeine can i take before i overdose?

1 doctor answer5 doctors weighed in
Dr. Alvin Lin
Geriatrics 30 years experience
Depends on your body: A cup of coffee may contain up to 100mg of caffeine. Most adults can consume two to four cups of coffee daily (really! or 200-300mg) w/o health concerns but this varies widely depending upon your metabolism & sensitivity. Once you push to 500-600mg of caffeine daily, your risk for side effects increases dramatically.

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Last updated Jul 27, 2012
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