Gaspari Nutrition BCAA 6000 is a branched chain amino acid (BCAA) supplement with Vitamins B6 and B12.BCAAs are the building blocks of protein. Protein contributes to a growth in and the maintenance of muscle mass. Therefore adding a BCAA supplement to a supplement regime may be of use to strength trainers, body builders and athletes.This supplement also contains the Vitamins B6 and B12. Vitamin B6 contributes to a reduction of tiredness and fatigue, normal energy-yielding metabolism, normal protein and glycogen metabolism and the normal red blood cell formation. Vitamin B12 also contributes to a reduction of tiredness and fatigue and normal energy-yielding metabolism but also supports the normal function of the immune system and the nervous system.Gaspari Nutrition recommend consuming one serving (6 tablet) of BCAA 6000 daily.