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Caffeine: What are hidden sources? - Mayo Clinic Health System
Hidden sources of caffeine extend beyond coffee and tea to include chocolate, medications, energy drinks, and various food additives. For most adults, consuming up to 400 milligrams of caffeine daily is safe, but excessive intake can cause side effects like insomnia, headaches, and high blood pressure.
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Summary
Hidden sources of caffeine extend beyond coffee and tea to include chocolate, medications, energy drinks, and various food additives. For most adults, consuming up to 400 milligrams of caffeine daily is safe, but excessive intake can cause side effects like insomnia, headaches, and high blood pressure.
Tags
caffeine · hidden-sources · health · nutrition · beverages · medications · wellness
Key entities
Mayo Clinic Health System (organization, 0.95) · American Heart Association (organization, 0.9) · Food and Drug Administration (organization, 0.9) · Brian Burroughs (person, 0.85) · caffeine withdrawal (concept, 0.88) · caffeine sensitivity (concept, 0.85) · energy drinks (technology, 0.8)
Classification
reference · language en · status final
Provenance
claude-haiku-4-5 via @stacklist/be@0.1.0, confidence 0.85, 15 Sep 2026