Whey Isolate

Whey isolate is a highly purified form of whey protein, a byproduct of cheese production. It is made by further processing whey to remove most of the lactose, fat, and carbohydrates, resulting in a powder that is at least 90% protein by weight.

Manufacturers add whey isolate primarily for its high protein content and functional properties, such as emulsification and foaming. It is commonly found in protein powders, sports nutrition products, and some baked goods where a protein boost is desired.

In the US, whey protein concentrate and isolate are generally recognized as safe (GRAS) by the FDA for use in food. Whey protein is a complete protein, providing all essential amino acids, and is often consumed to support muscle growth and repair. International bodies like JECFA have evaluated whey protein, and EFSA has also assessed its safety. Evidence generally supports its use for nutritional purposes at typical intake levels.