Cellucor is a sports supplement brand of Nutrabolt, a supplement manufacturer founded in 2002 and based in Austin Texas, USA. In addition to Cellucor, Nutrabolt also markets the Xtend brand, which focuses primarily on protein and amino acid products. The Cellucor brand was launched in 2002. Cellucor's products classically include primarily pre-workout boosters and fat burners, but for some time now also products such as protein powders and amino acid blends.
Cellucor's best-known product by far is the C4 training booster, of which new and modified versions have been launched time and again over the years. Cellucor's target group mainly includes recreational and competitive athletes who want to maximize their athletic performance and want an energy boost for extreme training sessions, as well as people who want to lose fat quickly.