Is 500 Grams of Caffeine Safe?
                                
                                
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                                    4 min read                                
                            
                                According to the U.S. Food and Drug Administration (FDA), a healthy adult's daily caffeine intake should not exceed 400 milligrams. The question of whether 500 grams of caffeine is safe requires a critical understanding of the units of measurement and the severe, life-threatening risks associated with such an extreme amount.