In an effort to become more diligent with label reading, I am trying to decipher whether or not a given product contains aspartame. Certain supps wil state, "phenylketonurics:contains phenylalanine." I know this is code for 'aspartame.' However, I have come across products that list artificial ingredients as part of the product formula, but make no mention of the phenyketonurics warning. Does this mean there is no aspartame? Perhaps just a synthesized 'flavor' of some sort that does not utilize artificial sweeteners.