CROSSFUEL BLACK SERIES – BCAA MAXX + ENERGY is simply everything you need in an amino acid formula with unmatched, mouthwatering flavor! Leucine loaded – 12:1:1 BCAA ratio means an industry-leading, massive dose of the critical amino acid – L-Leucine – the most sought after BCAA for building muscle, increasing protein synthesis and improving recovery. BCAA MAX + ENERGY is the most sought after BCAA for building muscle, increasing protein synthesis and improving recovery. BCAA MAXX + ENERGY is further enhanced with a researched dose of Astragin™, shown to dramatically increase uptake of BCAAs along with the super amino acid L-Glutamine. New BCAA MAXX + ENERGY now gives you an added burst by supplying 200 mg of caffeine. Power through even the toughest workouts or simply get a muscle-building boost… anytime. Building muscle has never been this delicious!