Pku sphere 20 liquid, vanilla, 8 fl.Oz.(237 ml).120 calories per 237 ml tetra pak.Ready-to-drink low phenylalanine medical food for the dietary management of phenylketonuria.Pku sphere is a blend of glycomacropeptide (gmp), essential and non-essential amino acids, carbohydrate, fat (including docosahexaenoic acid - dha), vitamins and minerals.Each 8 full ounce bottle contains 30mg of phenylalanine.Pku sphere liquid is suitable for 3 years of age and older.New resealable cap and recyclable tetra pak packaging.