MaxiMuscle BCAA powder lemon and lime. It contains an optimal 3:1:1 ratio of the ideal quality branched chain amino acids (BCAA) Leucine, isoleucine and valine. It comes in a refreshing Lemon and Lime flavour. BCAAs are ideally taken during your workout, to provide amino acid support throughout your session. BCAAs are considered essential amino acids, because the human body is unable to self synthesis such molecules and they are therefore required from diet.