apparently you need to re-read what i wrote and this sentence from you "actually BCAA's main ingredients are those 3, and the only ingredients as far as i know" contradicts itself. if it is the 3 main ingredient
s and those are the only you know, then look at the rest of the list and you'll know more

many decent BCAA products include more than just the 3 listed.
i said they are a small BUT IMPORTANT part, that is why they are listed as the main ingredients. these are the most important to bodybuilder, building muscle, etc. and are the "essential bodybuilder's amino acids"
sure. there are 9 essential amino acids: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, tryptophan, and valine. these can not by synthesized by a human. there are 20 amino acids that are made by the body and we do not rely on to get from food. these are different and not part of the essential amino acid group. any other questions feel free to post.