Milk protein isolate
What the research shows
No concerns
none of the findings here link it to harm
A concentrated milk product that is 40 to 90 percent milk protein.1
What research says
Studies in people
-
Benefit
Blood pressure after weight loss2
In adults on a weight-loss diet, milk protein isolate in place of some carbs lowered blood pressure and triglycerides.
The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.
Products
The 6 most-scanned of 1,881 products on Open Food Facts that list milk protein isolate.
- Protein Bar sabor a Brownie SPORTYFEEL · 135 g (3 x 45 g) 5 additives
- protein shake Orgain · 11 fl oz 4 additives
- Quest Protein Cookie bar Quest · 60 g 5 additives
- CHOCOLATEY CHUNKS COOKIE DOUGH PROTEIN BAR Kirkland Signature · 20 x 2.12 oz 3 additives
- Chocolate Peanut Butter Pure Protein · 50 g 6 additives
- Protein Cookie Quest · 60 g 6 additives
References
- 1Milk protein concentrate. Wikipedia. Accessed September 26, 2026. CC BY-SA 4.0.
- 2Hudson JL, Zhou J, Kim JE, Campbell WW. Incorporating Milk Protein Isolate into an Energy-Restricted Western-Style Eating Pattern Augments Improvements in Blood Pressure and Triglycerides, but Not Body Composition Changes in Adults Classified as Overweight or Obese: A Randomized Controlled Trial. Nutrients. 2020;12(3). doi:10.3390/nu12030851