Lactalbumin is a protein found in milk, particularly in the whey portion. It is one of the main proteins in cow's milk and is known for its high nutritional value. Lactalbumin plays a crucial role in various biological functions, including supporting the immune system and promoting growth and development in infants. This protein is often used in food products and dietary supplements due to its ability to enhance protein intake. Additionally, lactalbumin is a source of essential amino acids, making it beneficial for muscle repair and overall health.