Bsn amino x is a stimulant free amino acid supplement which has been designed at the highest quality with some of the best ingredientsr bsn amino x 10g of amino acids per serving which are perfect for anyone who is into training and followings a strict intense training regimer bsn amino x is main up of essential amino acids this means our body needs them but canrsquot create them they are made up of leucine isoleucine and valiner amino acids are the building blocks of protein and are ess