Enfamil PFD Toddler DHA & ARA 1 lb can, 2410 Calories. PFD Toddler is a protein- and amino acid-free product designed with carbohydrates, vitamins and minerals as well as the essential fatty acids for young children with various amino acid metabolic disorders. This product is for persons requiring a protein-free diet. PFD Toddler can be used as a dietary supplement supplying calories, vitamins and minerals, or specific amounts of amino acids or protein can be added to make a complete beverage. Use under direct and continuing supervision of a doctor.