Whey isolate is generally considered to be easier to digest compared to other forms of whey protein, such as whey concentrate or casein. This is because whey isolate undergoes additional processing to remove most of the lactose, fat, and other impurities, resulting in a product that is purer and easier to digest for many people.
However, it's important to note that some individuals may still have trouble digesting whey isolate, as they may have lactose intolerance or a sensitivity to the protein. In such cases, they may experience symptoms such as bloating, gas, or stomach discomfort after consuming whey isolate.