Rehydrated Whey

Rehydrated whey is a dairy product made by adding water to dried whey. Whey is the liquid byproduct left over after milk has been curdled and strained during the cheesemaking process. It contains lactose, proteins, minerals, and vitamins.

Manufacturers add rehydrated whey to foods as a source of protein and to improve texture and moisture. It is often found in frozen prepared meals, baked goods, and dairy-based products.

Rehydrated whey is generally recognized as safe (GRAS) by the FDA. It is a source of protein and other nutrients found naturally in milk. JECFA and EFSA have evaluated whey proteins, and they are considered safe when consumed as part of a balanced diet. No specific health concerns are associated with rehydrated whey at typical consumption levels.