Whey is considered the best protein powder for people who would like to build more muscles. This is one of the best in the market. People who have used it can attest to that. It tastes really great and it s a powerhouse of vitamins, minerals and nutrients. With this protein powder, you can forget about using multivitamins. Just remember that even though this is one of the very best you will still have to work out because if you do not, you will not build muscles, you will gain fat. This is a mix of casein, whey and egg white proteins. This restores muscles which are damaged when lifting weights and doing other bodybuilding routines. This is great for people who want to build muscles but cannot get all the calories from the food they eat. But this is not the best protein powder for people who are trying to lose weight. They should opt for protein powders which have less calories.