Milk protein isolate is a refined dairy powder that keeps the 80:20 casein-to-whey ratio found in milk. Most of the fat, carbohydrates, and lactose are removed, leaving a product that is more than 85 percent protein by weight. The result is a lean protein source with very little sugar or fat.
The high casein content causes a slow, steady release of amino acids into the bloodstream. This makes the powder useful for delivering protein over longer stretches, such as between meals or during sleep. Many people who are sensitive to lactose or want more protein per gram than a standard concentrate choose this isolate.
Mix the powder with water or milk and drink it after exercise, as a meal replacement, or before bed. The amount you take depends on your body size, daily protein target, and activity level.
Do not use this product if you have a milk or casein allergy. Even though lactose is low, trace levels remain and might bother people with extreme sensitivity. Speak with a healthcare provider before starting a new supplement.