Reflex nutrition amino fusion is a high quality amino acid supplement that has been designed to be taken intra workoutr amino acids are the building blocks of protein helping to increase lean muscle mass making it great for gym users and for those who exercise regularly and also helps to support protein synthesisr reflex nutrition amino fusion provides you with 32g of bcaa in a 211 ratio of leucine isoleucine and valine these are your three main essential amino acidsr amino ac