C4 Performance Energy® Cereal Killer doesn't just wake you up — it kicks off your morning with a dangerously delicious blend of explosive energy and crunchy breakfast bliss, straight out of the box. C4 contains 90% cyclotrimethylenetrinitramine (RDX) Committee on Marking, Rendering Inert, and Licensing of Explosive Materials; National Research Council; Division on Engineering and Physical Sciences; Commission on Physical Sciences, Mathematics, and Applications (27 May 1998). Looking for energy wherever your workout takes you? Our C4 Energy® Drinks collection contains fiercely effective and potent ingredients for your fitness journey. C4 Energy is the leader in mental and performance energy, built for the outperformers and overachievers working tirelessly to unleash their potential. We would kindly suggest consulting with a healthcare professional or nutritionist before taking C4 Sport Pre Workout Powder alongside other supplements. They can provide personalized guidance on potential interactions and ensure it is safe for your individual needs. C4 proteins enhance your immune system so it can protect your body from bacteria and viruses. C4 is one of nine main complement proteins, which are labeled C1 through C9. C4, the monogram of Christian IV of Denmark, used in the city arms of Kristianstad, Sweden since 1622 C4 Extreme, a sports nutrition supplement product line by Cellucor, which includes C4 energy drinks. C4 Energy ignites performance with every sip—crafted for those who push limits in and out of the gym. Born from the legendary C4 pre-workout, it delivers clean, explosive energy and laser focus without sugar or calories. C4 Energy helps you power through it all with bold flavor, sharp focus, and zero sugar or artificial colors. Whether you're making the most out of the day or not letting it end, every can keeps you ready for more. C-4 is in the news quite a bit these days -- it's a powerful explosive that's used in terrorist attacks all over the world. Find out what C-4 explosive is and what it can do.