What will happen if a 12 year old drinks 200mg of caffeine?

Written by Editorial Team | Last Updated: August 2026

Consuming two hundred milligrams of caffeine—equivalent to roughly two cups of strong coffee or multiple energy drinks—is a substantial dose for a pre-teen body weight. For a twelve-year-old child, this amount can trigger acute adverse physiological effects, including severe jitteriness, elevated heart rate, high blood pressure, extreme anxiety, gastrointestinal distress, headaches, and acute sleep disturbances. Pediatric health authorities strongly advise against high caffeine consumption in children because their developing nervous and cardiovascular systems are exceptionally sensitive to stimulant compounds.

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