Death Due to Caffeine and Methamphetamine Toxicity: A Case Report.

Caffeine (1,3,7-trimethylxanthine) is an over-the-counter psychostimulant that, when used in appropriate amounts, is generally considered safe. However, excessive use can cause various symptoms and, in severe cases, can even be life-threatening. A 34-year-old man with a reported history of psychiatric disorders was found unresponsive at his girlfriend's house and transported to an emergency department. He was presumed to have taken several caffeine pills and was pronounced dead approximately six hours later. There was no evidence of trauma or natural diseases at autopsy. Toxicology testing on hospital blood samples revealed toxic levels of caffeine and methamphetamine. After investigation of the circumstances surrounding the death and accounting for the autopsy and toxicology findings, the cause and manner of death were certified as combined caffeine and methamphetamine toxicity and accident, respectively. Lethal levels of caffeine have been reported when blood concentration exceeds 80 mg/L. Caution is needed to avoid excessive caffeine intake, especially when consumed in concentrated forms like tablets or powders. Caffeine should be used with care not only in cases of cardiovascular disease or genetic vulnerability but also for those with psychiatric disorders. Although deaths from caffeine are rare, they are consistently reported, necessitating attention and caution in its use.

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