Proteinex Liquid 16 Ounce (480 ML). Provides a high content of protein (Essential and common amino acids) in 2 tablespoons (30ml). It will provide the patient 15 grams of protein in only 60 calories. It may be used with patients with fluid restriction. The Protein is easily absorbed (100%). Proteinex does not contain any fat, sugar, carbohydrates, lactose or gluten. 960 calories per 16 ounces.