Medtrition ProSource Oral Supplement Neutral 30 oz 10gm Protein 100 cal 10/2026 by | Jul 8, 2026The ingredients for Prosource 10 gram liquid protein (original neutral flavor) are 30 fluid ounce bottle. Epires October, 2026. Protein (from collagen hydrolyzate and whey protein isolate). Contains: Milk.