Originally Posted by bigbodybuild
if they do not want the calories, they could use the plain unflavoured whey protein instead, this has no calories in it, you just basically mix it with water in the shaker and that is all it is, to get in the amino acids, whey is complete whereas Citrulline Malate is not.
whey protein has calories. 4 calories per gram of protein just like any other protein. and typically there is 1 to 2 grams of carbs in a serving and a gram of fat as well.