Are Coca‑Cola drinks suitable for people with Phenylketonuria (PKU)?
Phenylketonuria (PKU) is a rare medical condition that affects approximately one in 10,000 people born in the UK. Those that have this hereditary disease are unable to metabolise phenylalanine and therefore need to control their intake of this amino acid from all food sources.
People with PKU must manage their intake of foods and drinks containing the sweetener aspartame, which contains a source of phenylalanine.
Coca-Cola drinks sweetened with aspartame such as Diet Coke, Coke Zero, Sprite Zero, Fanta Zero, Schweppes Slimline Bitter Lemon and Lilt Zero are clearly labelled as such to alert these consumers to the presence of phenylalanine.