C4 now features the latest innovation for energy: TeaCor! Unbelievable Muscle Pumps! Explosive Energy With Creatine Nitrate! The greatest competitors in the world all have one thing in common—they’re driven by the ability to push limits. They don’t back down from a challenge, and they know that the only way to reach higher is to keep moving forward. For you, the ones who strive towards greatness, we're introducing the next level of C4--the edge you need to keep achieving your goals.C4 was the blast heard around the world when it launched in 2010. It’s helped gym junkies, weekend warriors, and competitive athletes everywhere rise to become their own versions of legendary.Cellucor’s Fourth Generation C4 is the next level of innovation and refinement. Its formula is now more dialed in, more potent, and includes the breakthrough ingredient, TeaCor for improved energy that comes on quickly and lasts longer. Explosive Energy Intense Focus Unbelievable Muscle Pumps Award Winning Brand Unforgettable Flavors The taste of C4 when you take a sip. The tingly sensation you feel as it travels through your body. The surge of motivation that hits you at the perfect moment-- right before you’re about to crush your workout… The only word to describe it is explosive. Everything you love about your favorite pre-workout lives on, and the next chapter of your most legendary workouts has just begun.