where I can get a list of recently been updated beyond drugs that can harm patients with Phenylketonuria? would be possible to get a list of medicines that people with phenylketonuria (PKU). Patients with this condition can not take medicines containing espartame; Phenylalanine and protein also. my son has this condition and in countless occasions the doctor prescribed him a drug that is a risk for people with this condition when I read the label I have to return it to the pharmacy and back to the office for me to change the prescription.