What is a C4 shot? The Ultimate Guide to Cellucor's Pre-Workout
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to the FDA, caffeine is the world's most consumed psychoactive substance, with about 80% of US adults consuming it daily, often for a performance boost. A C4 shot leverages this stimulant, along with other ingredients like beta-alanine and amino acids, to provide concentrated pre-workout support in a ready-to-drink format.