How Much Caffeine Is in Fitaid RX Zero?
                                
                                
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                                    4 min read                                
                            
                                Each can of Fitaid RX Zero contains 40mg of natural caffeine sourced from green tea extract, providing a mild boost rather than the intense jolt of a traditional energy drink. This is crucial information for athletes who want a performance-supporting beverage without excessive stimulants and with zero sugar.