Whey protein is a type of protein derived from milk that is widely used as a dietary supplement. It is a complete protein, meaning it contains all nine essential amino acids that the body cannot produce on its own.
Whey protein is rapidly absorbed by the body, making it an excellent source of post-workout nutrition.
Mass gainers, on the other hand, are supplements that are designed to help individuals gain weight and build muscle mass. Mass gainers are intended for individuals who have a hard time consuming enough calories and nutrients through their regular diet alone.
