Xtend

XTEND is a branched-chain amino acid (BCAA) supplement brand created by Scivation, a sports nutrition company founded in 2004 in Burlington, North Carolina. Nutrabolt, the Austin, Texas-based company behind Cellucor and C4, bought Scivation in 2017, and XTEND is now run as one of Nutrabolt's brands, with its products sold through Cellucor's website.

XTEND is known for flavored BCAA drink powders designed for use during workouts; Scivation added electrolytes to the formula in 2011. The current lineup includes XTEND Original BCAA, XTEND Sport, an EAA powder, XTEND Ripped and XTEND Pro, along with licensed flavors such as an Airheads collaboration, and the products are sold online and through retailers. Some products carry third-party certification: XTEND Sport and XTEND Hydration flavors are listed in the NSF Certified for Sport database, and XTEND appears on Informed Choice's list of certified brands.