PKU Lophlex LQ 125 mL Pouch, Juicy Tropical. PKU Lophlex LQ 125 mL pouch, tropical ready to drink, 120 calories. A phenylalanine-free, ready-to-drink medical food containing amino acids, vitamins, trace elements and some minerals; for the dietary management of proven Phenylketonuria (PKU) in individuals 4 years and older including pregnant women and women of child-bearing age.