as many of you may know I use mio to flavour my bettermilk formula. as well as some of the flavours of the nestle disani and crystal lights that do not contain aspertame. all of these squeezes or liquid water enhancers are made with surculose. they have no aspartame no protein no calories.  surculose can not be broken down in the body and is excreted through urine. well now there is a new product and nee flavours available that are pku safe. they are made by powerade. I found them today at my local grocery store.  I purchased the mixed berry and orange. they are cammed x ion powerade zero drops. + electrolytes.  per drop they have 0 calories 0 protein and only contain sodium and potassium. they where around 4 dollars canadian each. I am currently on my dinner break at work. I am drinking my bettermilk with the mixed berry. tastes just like cotton candy. I enjoy them and the variety they bring to my formula. look for them in a store near you. they work great with the mte amini acid mix and add ins as well.