C4 Ultimate is a pre-workout manufactured by Cellucor. It is designed to increase energy, boost focus, raise endurance and enhance muscle pumps.
The manufacturer says that C4 Ultimate is the strongest pre-workout in the Cellucor range.
The product contains several common pre-workout ingredients. These include beta-alanine (as CarnoSyn®), which the brand says could “support muscle endurance”.
C4 Ultimate also features caffeine, theacrine and rauwolfia to increase energy, while citrulline malate is said to boost nitric oxide, boost blood flow and enhance muscle pumps. The pre-workout also contains creatine, which could boost muscle energy and overall gym performance.
Flavors include – or have included – “Arctic Bro-Cone”, “Sour Batch Bros”, “Cotton Candy” and “Icy Blue Razz”.