One Science Nutrition Nitra BCAA is uniquely formulated to help you fight the muscle loss and it also provides 27g BCAA to your muscles which minimizes the protein breakdown and act as a fuel. Nitra BCAA contains 1g citrulline malate and L-glutamine and also has electrolytes to improve your performance during the intense training sessions. :: DIRECTIONS:- Mix 1 serving (13g) in 400 ml water or any other favorite liquid and shake vigorously! Use before, during or after training, or any other time like before going to bed. Letting it sit for a while ensures the best dissolution!