FYI-Amino acids only have calories as complete proteins. For instance, if Glutacene contains 17 out of 21 amino acids, then it would not be a complete protein, and therefore would contain no calories. I don’t know about the carb or fat content which would contribute calories. Just remember that complete protein contains all essential and nonessential amino acids (of course in different amounts). 1 gram of protein = 4 calories.