Phenex Amino Acid-Modified Medical Food for PKU

Managing phenylketonuria (PKU) means keeping phenylalanine intake tightly controlled while still meeting the full protein and nutrient needs of a growing child or adult. The Phenex line from Abbott is formulated for exactly that purpose: phenylalanine-free medical foods that supply the essential amino acids the body can't safely get from a restricted diet.

The collection follows the two stages families ask about most. Phenex-1 Amino Acid-Modified Infant Formula With Iron (unflavored, 14.1 oz powder) is designed for infants and young children newly diagnosed with PKU, providing iron-fortified nutrition without any phenylalanine. As children move past their first year, Phenex-2 Amino Acid-Modified Medical Food takes over, available in an unflavored powder and a vanilla-flavored version for those who prefer taste variety. Both Phenex-2 cans deliver 410 calories and are appropriate from age one through adulthood.