When you're trying to build muscle, you need more than just a huge supply of proteins. Proteins are used to build muscle, but on a more basic level proteins are built from amino acids. Usually when you eat protein, your body breaks it down and reforms it into the protein you need. Twinlab Amino Fuel 2000 skips a step and gives you the basic building blocks, each tablet supplying 2000mg of amino acids.Your muscles' proteins use some amino acids more than others and this supplement provides them in the right amounts for maximum effectiveness. Some of the especially important components are branched chain amino acids, which make up about a third of your skeletal muscles, and L-carnitine which aids in fat metabolism. Give your muscles the fuel they need with Twinlab Amino Fuel 2000.