Why Am I Shaking After Drinking 5 Hour Energy?
                                
                                
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                                    4 min read                                
                            
                                According to the Food and Drug Administration (FDA), consuming more than 400 mg of caffeine per day can cause adverse side effects. If you find yourself asking, 'Why am I shaking after drinking 5 Hour Energy?', the answer lies in its potent caffeine content and your body's sensitivity to stimulants.