Ingredient

Proprietary Protein Blend

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Source
Animal-derived
Allergen
No
Role in food
Manufacturers use proprietary protein blends to boost the protein content of foods and beverages. …

What it is

A proprietary protein blend is a mixture of different protein sources, often including whey, casein, soy, pea, or egg proteins. These proteins are typically isolated from their original sources through processes like filtration and drying. The specific combination and processing methods are unique to each manufacturer.

Why it's used

Manufacturers use proprietary protein blends to boost the protein content of foods and beverages. They are commonly found in sports nutrition products like protein shakes and bars, as well as in some cereals and weight control products. The blend aims to provide a complete amino acid profile and improve texture.

Health notes

The U.S. Food and Drug Administration (FDA) generally recognizes protein sources used in these blends as safe (GRAS) when used as intended. International bodies like JECFA and EFSA have evaluated many individual protein sources. While generally considered safe, some individuals may experience digestive discomfort. Evidence on the long-term health benefits of high protein intake is still evolving.

Allergen info

Depending on the specific protein sources included, a proprietary protein blend may contain major allergens such as milk, egg, soy, or wheat. It is not derived from fish, shellfish, tree nuts, or peanuts unless specified. Gluten may be present if wheat is an ingredient.

Products containing Proprietary Protein Blend

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.