How long do you feel the effects of a Red Bull?
                                
                                
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                                    7 min read                                
                            
                                Within just 10 to 15 minutes of drinking a Red Bull, caffeine begins entering your bloodstream, leading to an increased heart rate and heightened alertness. However, the actual duration of the 'energetic' feeling is much shorter than the time the caffeine takes to leave your body entirely.