Following an application from Vitabiotics Ltd. pursuant to Article 13(5) of Regulation (EC) No 1924/2006 via the Competent Authority of the United Kingdom, the Panel on Dietetic Products, Nutrition and Allergies was asked to deliver an opinion on the scientific substantiation of a health claim related to L-tyrosine and contribution to normal synthesis of dopamine. The food constituent, L-tyrosine, is considered to be sufficiently characterised. Contribution to normal synthesis of dopamine is considered to be a beneficial physiological effect. The Panel has already addressed the role of L-tyrosine in the normal synthesis of catecholamines for the general population with a favourable outcome in a previous opinion under Article 13(1) of Regulation (EC) No 1924/2006. L-Tyrosine is the starting point for the synthesis of all catecholamines, including dopamine. The Panel concludes that a cause and effect relationship has been established between the consumption of L-tyrosine in a protein adequate diet and contribution to normal synthesis of dopamine. However, no evidence has been provided that the protein supply in the diet of the European population is not sufficient to fulfil this function of the amino acid. The following wording reflects the scientific evidence: “L-tyrosine contributes to normal synthesis of dopamine”. In order to bear the claim a food should be at least a source of protein as per Annex to Regulation (EC) No 1924/2006. Such amounts can be easily consumed as part of a balanced diet. The target population is the general population. © European Food Safety Authority, 2011