L Carnitine and Fat Loss L Tyrosine, 500 mg, 180 Capsules L Carnitine XS 4000, Apple Bomb, 15.72 fl oz (465 ml) Amino acids L Tyrosine is the raw building block for your dopamine. It is the material your brain needs to manufacture focus. Without it, you are trying to build a bridge with no Most people dont know the difference between generic L Carnitine and a branded raw like Carnipure. But quality matters., Carnipure is used because its tested for purity, consistency, and exact L Tyrosine, 500mg with B6 Reliance Vitamin