Ingredient

Source Of Protein

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Source
Unknown
Not yet classified by editors
Allergen
No
Role in food
Manufacturers add protein to foods to boost their nutritional content, particularly for consumers seeking …

What it is

Protein is a nutrient made of amino acids, essential for building and repairing tissues. It can be sourced from plants (like soy, pea, or rice) or animals (like whey from milk or casein). The specific source and processing method will determine its final form and properties.

Why it's used

Manufacturers add protein to foods to boost their nutritional content, particularly for consumers seeking muscle building or satiety. It is commonly found in protein bars, shakes, powdered drink mixes, and plant-based meat alternatives.

Health notes

Protein is a fundamental nutrient recognized by dietary guidelines. The FDA considers protein a key component of a healthy diet. Regulatory bodies like JECFA and EFSA have evaluated various protein sources. Excessive protein intake, particularly from animal sources, has been linked in some studies to potential kidney strain, though this is debated and generally not a concern for individuals with healthy kidneys consuming typical amounts.

Allergen info

Depending on the source, protein ingredients can be derived from major allergens. For example, whey and casein are milk derivatives, while soy protein comes from soybeans. Gluten may be present if the protein is derived from wheat.

Products containing Source Of Protein

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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.