How many cups of coffee can you drink in 24 hours? A comprehensive guide
                                
                                
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                                    4 min read                                
                            
                                According to the U.S. Food and Drug Administration (FDA), most healthy adults can safely consume up to 400 milligrams of caffeine daily. This is a key factor when determining how many cups of coffee can you drink in 24 hours and is equivalent to roughly four to five average 8-ounce cups.