Whey is isolated from milk and is recognised as an easy to digest high quality source of protein providing an excellent mix of amino acids including high levels of the three branch chain amino acids bcaas l leucine l isoleucine and l valine amino acids are the essential components needed by the body to build and repair muscles lamberts whey protein is one of the highest quality whey products available and is manufactured in the uk by one of the world39s largest producers of sports