Active Critical Care Liquid Protein Nutritional Supplement, Sugar-Free, Citrus Berry Flavor, 30 oz. Bottle, 4/CS (ENT697) Case of 4Ready to use liquid supplement with high protein content is a medical food that helps provide concentrated source of protein for people with increased protein needs Formulated with dual source of hydrolyzed collagen and whey protein for 18 grams of protein per 1 oz. serving Enhanced with arginine, zinc, and vitamin C for targeted wound care support Shelf stable supplement; refrigeration not recommended Lactose free and gluten free