TYR GMPro Mix-In is a Food for Special Medical Purposes for use under medical supervision. TYR GMPro Mix-In is an unflavoured, nutritionally incomplete, low phenylalanine* and low tyrosine*, powdered protein source containing glycomacropeptide (GMP), with essential and non-essential amino acids, a small amount of carbohydrate and some minerals. TYR GMPro Mix-In is available in 30 x 12.5g sachets. *TYR GMPro Mix-In contains 18.0mg of phenylalanine and 3.5mg of tyrosine per 12.5g sachet. This should be taken into consideration as part of the patient’s overall dietary intake. Protein substitutes based on GMP are a natural source of phenylalanine and tyrosine.