Whey protein

Whey protein is a mixture of proteins isolated from whey, a by-product of cheese production. It is a complete protein, meaning it contains all nine essential amino acids. The whey is typically filtered and dried to produce a powder.

Manufacturers add whey protein for its nutritional value and functional properties, such as improving texture and solubility. It is commonly found in protein powders, sports nutrition products, and sometimes added to baked goods and dairy products to boost protein content.

Whey protein is not classified as a food additive and does not have an E-number. It is a source of high-quality protein, which is essential for muscle repair and growth. The European Food Safety Authority (EFSA) has evaluated whey protein in the context of novel foods and health claims, but it is not subject to specific ADI (Acceptable Daily Intake) limits as it is a food ingredient. Evidence generally supports its role in sports nutrition and muscle synthesis.