ProHeal Liquid Protein, 30 oz. Bottle. 30 servings per bottle. 100 calories per serving. A medical food developed for the dietary management of wounds and conditions requiring supplemental protein. ProHeal is a liquid protein supplement that contains a concentrated blend of hydrolyzed collagen and whey protein for maximum protein content and absorption. Soy, lactose, gluten, and sugar free.May be administered orally or via feeding tube.