Whey Protein Powder is the most pure form of protein available. It is made from milk and is rich in essential amino acids. It is easily digested and absorbed, and helps support muscle growth.
Whey Protein Isolate is a more purified version of Whey Protein Concentrate, making it more rapidly absorbed into the bloodstream. This is a popular option for people on more calorie restricted diets, and who want a more pure and concentrated source of protein.
Casein is a slow releasing protein. This means that it provides a slow and steady release of amino acids into your bloodstream for hours. This means that it is ideal to drink before bed because it will provide your body with Protein throughout the night.