Hey my name is meaghan and im 18 and have CPKU. I actually take those pills you are referring to . They are called phlexy-10 tablets. I take 40 a day but have to split it with formula (although it is 1/2 the amoutn i would normally take). Doctors dont like to prescribe pills solely because they have no caloric value to them. But they are really easy to take (a little larger than most vitamins) and extremely convienent (i take them during classes at college when im too lazy to take them when i wake up.) Ask your doctor about them. I tried another pill, dont remember what it was called, but I had to take 108 a day, so dont try those.