Glytactin Restore Lite 10 Tangerine, 16.9 oz (500 mL) bottle. A whole protein blend of glycomacropeptide and amino acids, is a lite version on our re-hydration beverage with 10 grams of protein for PKU! Contains electrolyte and B vitamins and is appropriate for use during illness and exercise. Suitable for persons one year of age and older. 70 calories per bottle.