Exchanges foods for diets of Innate Errors of Metabolism (EIM). Intercambios Vitaflo is an app designed by the team of the Nutrition and Metabolopathies Unit of the La Fe University Hospital in Valencia and developed by Vitaflo, Nestlé HealthScience. A support tool for patients and families with any of the following inborn errors of metabolism: Phenylketonuria, Homocystinuria, Tyrosinemia, Urea Cycle Disorders, Methylmalonic Acidemia, Propionic Acidemia, and Maple Syrup Urine Disease. It is for informational purposes only and should not replace your doctor's advice or recommendations.