It’s amino acids, fats, and sugar in a ratio that mirrors the elements of a standard diet.
It’s not a supplement. It has to replace your diet completely for 2 weeks, no exceptions.
By consuming amino acids instead of proteins (which are composed of amino acids) and omitting fiber it starves skips straight to absorption and starves the bacterial overgrowth.
It’s an old concept. The unique part of this one is that it supposedly tastes okay.