Pro-Stat Max Ready-to-Use Whey-Based Liquid Protein Supplement 1 oz. packet, Grape. 80 calories per packet. 96 packets per case. A sugar free, hydrolyzed whey based liquid protein medical food 11g of high quality protein for increased needs related to pressure ulcers, wounds, critical illness, unintentional weight loss, protein-energy malnutrition, low serum proteins, muscle loss, pre- and post-surgery and cancer.