TYR express 20 plus Oral Supplement Unflavored Powder 34 Gram Individual PacketTYR express plus is a powdered formula with no phenylalanine or tyrosine; it's for use in the dietary management of tyrosinemia and is a blend of essential and nonessential amino acids, carbohydrate, docosahexaenoic acid (DHA), vitamins and minerals. Convenient, pre measured packaging means there's no weighing or measuring needed; packets are easy to take on the go. 20 gram protein equivalent packets can be mixed with 3 ounces of water or permitted