Is 250 mL of caffeine a lot? Understanding Your Intake
                                
                                
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                                    6 min read                                
                            
                                According to the Food and Drug Administration, most healthy adults can safely consume up to 400 mg of caffeine per day. However, to answer the question, 'Is 250 mL of caffeine a lot?', you must first understand that 250 mL is a volume measurement, not a direct indicator of the amount of caffeine, which is measured in milligrams (mg).