save £2.60 when you buy 180 tablets saving included in price shown l-lysine one of the eight essential amino acids (eaas) which can not be made by our bodies. adequate l-lysine in our diet is therefore critical for optimum physical performance muscle building & muscular endurance. diets that contain little animal protein may be unable to deliver the levels of l-lysine needed by active bodies which is will be at least 3g per day. vegans & vegetarians are thought to be particularly at risk from lysine deficiency as vegetable proteins contain relatively little lysine. we choose to use usp grade l-lycine a quality suitable for clinical nutrition products so you can rely on this supplement to deliver high levels of pure quality-assured l-lycine. an essential amino acid can not be made by our bodies pure usp grade material the grade used for clinical nutrition uk made & vegetarian manufactured to gmp pharmaceutical standards