Rice protein concentrate is a protein powder made from whole brown rice. Enzymes or wet extraction strip away most of the carbs and fiber, leaving a product that is 60 to 80 percent protein by weight. It holds more fat and starch than a rice protein isolate. The flavor is mild and a little nutty, so it mixes smoothly into shakes or food.
Athletes use it after workouts to help muscles repair and grow. Since it contains no dairy, soy, or gluten, it suits people who steer clear of those ingredients. Rice protein is low in the amino acid lysine. For that reason, people often pair it with pea protein or another legume protein to round out the amino acid profile.
The typical serving is one scoop (roughly 20 to 30 grams) in water, milk, or a smoothie. Most take it within an hour of exercise or between meals as a quick protein top-up. The body digests it a little less completely than whey or soy (around 90 percent), but it sits well with most people.