Phenyl - Free ® 1, Phenyl - Free ® 2 and Phenyl - Free ® 2HP are infant formula and medical food powders that are free of the essential amino acid phenylalanine for infants, toddlers, children, and adults with phenylketonuria (PKU). (enfamil.com)
The classic success story is neonatal screening for phenylketonuria [a genetic disorder characterized by the inability to utilize the amino acid phenylalanine], which has saved thousands of children's brains. (discovermagazine.com)
Children with the genetic disorder phenylketonuria, for example, are usually diagnosed after birth and must be put on a strict, lifelong diet. (newscientist.com)