Whey protein isolate is a high-quality protein derived from milk during the cheese-making process. It contains a higher percentage of protein compared to other forms of whey, typically around 90% or more. This makes it a popular choice for athletes and fitness enthusiasts looking to support muscle growth and recovery. Unlike whey protein concentrate, which contains more fats and carbohydrates, whey protein isolate is processed to remove most of these components. This results in a purer protein source that is low in lactose, making it suitable for those who are lactose intolerant.